62b79417a4
Bug: 154267746 Test: doc update only. Builds Change-Id: I997f1febef4f7b266cc51fe59a645ee1a48fd971
483 lines
17 KiB
Text
483 lines
17 KiB
Text
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.hardware.gnss@2.0;
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import @1.0::IGnssMeasurementCallback;
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import @1.1::IGnssMeasurementCallback;
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import ElapsedRealtime;
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import GnssConstellationType;
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/** The callback interface to report measurements from the HAL. */
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interface IGnssMeasurementCallback extends @1.1::IGnssMeasurementCallback {
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/**
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* Flags indicating the GNSS measurement state.
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*
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* <p>The expected behavior here is for GNSS HAL to set all the flags that apply. For example,
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* if the state for a satellite is only C/A code locked and bit synchronized, and there is still
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* millisecond ambiguity, the state must be set as:
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*
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* STATE_CODE_LOCK | STATE_BIT_SYNC | STATE_MSEC_AMBIGUOUS
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*
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* <p>If GNSS is still searching for a satellite, the corresponding state must be set to
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* STATE_UNKNOWN(0).
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*
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* <p>In @2.0::IGnssMeasurementCallback.GnssMeasurement, v1_1.v1_0.receivedSvTimeInNs, the
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* received satellite time, is relative to the beginning of the system week for all
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* constellations except for Glonass where it is relative to the beginning of the Glonass system
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* day.
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*
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* <p>The table below indicates the valid range of the received GNSS satellite time. These
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* ranges depend on the constellation and code being tracked and the state of the tracking
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* algorithms given by the getState method. If the state flag is set, then the valid measurement
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* range is zero to the value in the table. The state flag with the widest range indicates the
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* range of the received GNSS satellite time value.
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*
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* <table>
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* <thead>
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* <tr>
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* <td />
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* <td colspan="3"><strong>GPS/QZSS</strong></td>
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* <td><strong>GLNS</strong></td>
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* <td colspan="2"><strong>BDS</strong></td>
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* <td colspan="3"><strong>GAL</strong></td>
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* <td><strong>SBAS</strong></td>
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* </tr>
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* <tr>
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* <td><strong>State Flag</strong></td>
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* <td><strong>L1 C/A</strong></td>
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* <td><strong>L5I</strong></td>
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* <td><strong>L5Q</strong></td>
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* <td><strong>L1OF</strong></td>
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* <td><strong>B1I (D1)</strong></td>
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* <td><strong>B1I (D2)</strong></td>
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* <td><strong>E1B</strong></td>
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* <td><strong>E1C</strong></td>
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* <td><strong>E5AQ</strong></td>
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* <td><strong>L1 C/A</strong></td>
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* </tr>
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* </thead>
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* <tbody>
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* <tr>
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* <td>
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* <strong>STATE_UNKNOWN</strong>
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* </td>
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* <td>0</td>
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* <td>0</td>
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* <td>0</td>
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* <td>0</td>
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* <td>0</td>
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* <td>0</td>
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* <td>0</td>
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* <td>0</td>
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* <td>0</td>
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* <td>0</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_CODE_LOCK</strong>
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* </td>
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* <td>1 ms</td>
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* <td>1 ms</td>
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* <td>1 ms</td>
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* <td>1 ms</td>
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* <td>1 ms</td>
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* <td>1 ms</td>
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* <td>-</td>
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* <td>-</td>
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* <td>1 ms</td>
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* <td>1 ms</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_SYMBOL_SYNC</strong>
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* </td>
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* <td>20 ms (optional)</td>
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* <td>10 ms</td>
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* <td>1 ms (optional)</td>
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* <td>10 ms</td>
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* <td>20 ms (optional)</td>
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* <td>2 ms</td>
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* <td>4 ms (optional)</td>
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* <td>4 ms (optional)</td>
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* <td>1 ms (optional)</td>
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* <td>2 ms</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_BIT_SYNC</strong>
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* </td>
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* <td>20 ms</td>
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* <td>20 ms</td>
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* <td>1 ms (optional)</td>
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* <td>20 ms</td>
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* <td>20 ms</td>
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* <td>-</td>
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* <td>8 ms</td>
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* <td>-</td>
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* <td>1 ms (optional)</td>
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* <td>4 ms</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_SUBFRAME_SYNC</strong>
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* </td>
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* <td>6s</td>
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* <td>6s</td>
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* <td>-</td>
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* <td>2 s</td>
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* <td>6 s</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>100 ms</td>
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* <td>-</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_TOW_DECODED</strong>
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* </td>
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* <td colspan="2">1 week</td>
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* <td>-</td>
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* <td>1 day</td>
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* <td colspan="2">1 week</td>
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* <td colspan="2">1 week</td>
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* <td>-</td>
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* <td>1 week</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_TOW_KNOWN</strong>
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* </td>
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* <td colspan="3">1 week</td>
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* <td>1 day</td>
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* <td colspan="2">1 week</td>
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* <td colspan="3">1 week</td>
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* <td>1 week</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_GLO_STRING_SYNC</strong>
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* </td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>2 s</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_GLO_TOD_DECODED</strong>
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* </td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>1 day</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_GLO_TOD_KNOWN</strong>
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* </td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>1 day</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_BDS_D2_BIT_SYNC</strong>
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* </td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>2 ms</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_BDS_D2_SUBFRAME_SYNC</strong>
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* </td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>600 ms</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_GAL_E1BC_CODE_LOCK</strong>
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* </td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>4 ms</td>
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* <td>4 ms</td>
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* <td>-</td>
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* <td>-</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_GAL_E1C_2ND_CODE_LOCK</strong>
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* </td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>100 ms</td>
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* <td>-</td>
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* <td>-</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_2ND_CODE_LOCK</strong>
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* </td>
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* <td>-</td>
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* <td>10 ms (optional)</td>
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* <td>20 ms</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>100 ms (optional)</td>
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* <td>100 ms</td>
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* <td>-</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_GAL_E1B_PAGE_SYNC</strong>
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* </td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>2 s</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* </tr>
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* <tr>
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* <td>
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* <strong>STATE_SBAS_SYNC</strong>
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* </td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>-</td>
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* <td>1 s</td>
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* </tr>
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* </tbody>
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* </table>
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*
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* <p>Note: TOW Known refers to the case where TOW is possibly not decoded over the air but has
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* been determined from other sources. If TOW decoded is set then TOW Known must also be set.
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*
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* <p>Note well: if there is any ambiguity in integer millisecond, STATE_MSEC_AMBIGUOUS must be
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* set accordingly, in the 'state' field. This value must be populated if 'state' !=
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* STATE_UNKNOWN.
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*
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* <p>Note on optional flags:
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* <ul>
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* <li> For L1 C/A and B1I, STATE_SYMBOL_SYNC is optional since the symbol length is the
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* same as the bit length.
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* <li> For L5Q and E5aQ, STATE_BIT_SYNC and STATE_SYMBOL_SYNC are optional since they are
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* implied by STATE_CODE_LOCK.
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* <li> STATE_2ND_CODE_LOCK for L5I is optional since it is implied by STATE_SYMBOL_SYNC.
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* <li> STATE_2ND_CODE_LOCK for E1C is optional since it is implied by
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* STATE_GAL_E1C_2ND_CODE_LOCK.
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* <li> For E1B and E1C, STATE_SYMBOL_SYNC is optional, because it is implied by
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* STATE_GAL_E1BC_CODE_LOCK.
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* </ul>
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*
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*/
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@export(name="", value_prefix="GNSS_MEASUREMENT_")
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enum GnssMeasurementState : uint32_t {
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STATE_UNKNOWN = 0,
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STATE_CODE_LOCK = 1 << 0,
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STATE_BIT_SYNC = 1 << 1,
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STATE_SUBFRAME_SYNC = 1 << 2,
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STATE_TOW_DECODED = 1 << 3,
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STATE_MSEC_AMBIGUOUS = 1 << 4,
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STATE_SYMBOL_SYNC = 1 << 5,
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STATE_GLO_STRING_SYNC = 1 << 6,
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STATE_GLO_TOD_DECODED = 1 << 7,
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STATE_BDS_D2_BIT_SYNC = 1 << 8,
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STATE_BDS_D2_SUBFRAME_SYNC = 1 << 9,
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STATE_GAL_E1BC_CODE_LOCK = 1 << 10,
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STATE_GAL_E1C_2ND_CODE_LOCK = 1 << 11,
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STATE_GAL_E1B_PAGE_SYNC = 1 << 12,
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STATE_SBAS_SYNC = 1 << 13,
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STATE_TOW_KNOWN = 1 << 14,
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STATE_GLO_TOD_KNOWN = 1 << 15,
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STATE_2ND_CODE_LOCK = 1 << 16,
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};
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/**
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* Extends a GNSS Measurement, adding a GnssMeasurementCodeType, a GnssMeasurementState, and
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* replacing the GnssConstellationType.
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*/
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struct GnssMeasurement {
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/**
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* GNSS measurement information for a single satellite and frequency, as in the 1.1
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* version of the HAL with further clarification of the value reported in the
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* accumulatedDeltaRangeM field, i.e., the alignment of the phase measurement will not be
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* adjusted by the receiver so the in-phase and quadrature phase components will have a
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* quarter cycle offset as they do when transmitted from the satellites. If the measurement
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* is from a combination of the in-phase and quadrature phase components, then the alignment
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* of the phase measurement will be aligned to the in-phase component.
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*
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* In this version of the HAL, the field 'state' in the v1_1.v1_0 struct is deprecated, and
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* is no longer used by the framework. The satellite sync state is instead reported in
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* @2.0::IGnssMeasurementCallback.GnssMeasurement.state.
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*
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* In this version of the HAL, the field 'constellation' in the v1_1.v1_0 struct is
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* deprecated, and is no longer used by the framework. The constellation type is instead
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* reported in @2.0::IGnssMeasurementCallback.GnssMeasurement.constellation.
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*/
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@1.1::IGnssMeasurementCallback.GnssMeasurement v1_1;
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/**
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* The type of code that is currently being tracked in the GNSS measurement.
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*
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* For high precision applications the type of code being tracked needs to be considered
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* in-order to properly apply code specific corrections to the pseudorange measurements.
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*
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* Value "A" represents GALILEO E1A, GALILEO E6A, IRNSS L5A, IRNSS SA.
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*
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* Value "B" represents GALILEO E1B, GALILEO E6B, IRNSS L5B, IRNSS SB.
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*
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* Value "C" represents GPS L1 C/A, GPS L2 C/A, GLONASS G1 C/A, GLONASS G2 C/A, GALILEO E1C,
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* GALILEO E6C, SBAS L1 C/A, QZSS L1 C/A, IRNSS L5C.
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*
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* value "D" represents BDS B1C D.
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*
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* Value "I" represents GPS L5 I, GLONASS G3 I, GALILEO E5a I, GALILEO E5b I, GALILEO E5a+b I,
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* SBAS L5 I, QZSS L5 I, BDS B1 I, BDS B2 I, BDS B3 I.
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*
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* Value "L" represents GPS L1C (P), GPS L2C (L), QZSS L1C (P), QZSS L2C (L), LEX(6) L.
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*
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* Value "M" represents GPS L1M, GPS L2M.
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*
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* Value "N" represents GPS L1 codeless, GPS L2 codeless.
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*
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* Value "P" represents GPS L1P, GPS L2P, GLONASS G1P, GLONASS G2P, BDS B1C P.
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*
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* Value "Q" represents GPS L5 Q, GLONASS G3 Q, GALILEO E5a Q, GALILEO E5b Q, GALILEO E5a+b Q,
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* SBAS L5 Q, QZSS L5 Q, BDS B1 Q, BDS B2 Q, BDS B3 Q.
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*
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* Value "S" represents GPS L1C (D), GPS L2C (M), QZSS L1C (D), QZSS L2C (M), LEX(6) S.
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*
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* Value "W" represents GPS L1 Z-tracking, GPS L2 Z-tracking.
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*
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* Value "X" represents GPS L1C (D+P), GPS L2C (M+L), GPS L5 (I+Q), GLONASS G3 (I+Q),
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* GALILEO E1 (B+C), GALILEO E5a (I+Q), GALILEO E5b (I+Q), GALILEO E5a+b(I+Q),
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* GALILEO E6 (B+C), SBAS L5 (I+Q), QZSS L1C (D+P), QZSS L2C (M+L), QZSS L5 (I+Q),
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* LEX(6) (S+L), BDS B1 (I+Q), BDS B1C (D+P), BDS B2 (I+Q), BDS B3 (I+Q), IRNSS L5 (B+C).
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*
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* Value "Y" represents GPS L1Y, GPS L2Y.
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*
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* Value "Z" represents GALILEO E1 (A+B+C), GALILEO E6 (A+B+C), QZSS L1-SAIF.
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*
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* Value "UNKNOWN" represents the GNSS Measurement's code type is unknown.
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*
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* This is used to specify the observation descriptor defined in GNSS Observation Data File
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* Header Section Description in the RINEX standard (Version 3.XX). In RINEX Version 3.03,
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* in Appendix Table A2 Attributes are listed as uppercase letters (for instance, "A" for
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* "A channel"). In the future, if for instance a code "G" was added in the official RINEX
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* standard, "G" could be specified here.
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*/
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string codeType;
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/**
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* Per satellite sync state. It represents the current sync state for the associated
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* satellite.
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*
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* Based on the sync state, the receivedSvTimeInNs field must be interpreted accordingly.
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*
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* This value is mandatory.
|
|
*/
|
|
bitfield<GnssMeasurementState> state;
|
|
|
|
/**
|
|
* The constellation type of the GNSS measurement.
|
|
*/
|
|
GnssConstellationType constellation;
|
|
};
|
|
|
|
/**
|
|
* Complete set of GNSS Measurement data, same as 1.1 with additional enum in measurements.
|
|
*/
|
|
struct GnssData {
|
|
/** The full set of satellite measurement observations. */
|
|
vec<GnssMeasurement> measurements;
|
|
|
|
/** The GNSS clock time reading. */
|
|
GnssClock clock;
|
|
|
|
/**
|
|
* Timing information of the GNSS data synchronized with SystemClock.elapsedRealtimeNanos()
|
|
* clock.
|
|
*/
|
|
ElapsedRealtime elapsedRealtime;
|
|
};
|
|
|
|
/**
|
|
* Callback for the hal to pass a GnssData structure back to the client.
|
|
*
|
|
* @param data Contains a reading of GNSS measurements.
|
|
*/
|
|
gnssMeasurementCb_2_0(GnssData data);
|
|
};
|