Example usage for android.location GnssMeasurement getSvid

Introduction

In this page you can find the example usage for android.location GnssMeasurement getSvid.

Prototype

public int getSvid() 

Source Link

Document

Gets the satellite ID.

Usage

From source file:com.google.android.apps.location.gps.gnsslogger.PlotFragment.java

/**
 *  Updates the CN0 versus Time plot data from a {@link GnssMeasurement}
 *///from   ww  w .jav  a 2s  .c o m
protected void updateCnoTab(GnssMeasurementsEvent event) {
    long timeInSeconds = TimeUnit.NANOSECONDS.toSeconds(event.getClock().getTimeNanos());
    if (mInitialTimeSeconds < 0) {
        mInitialTimeSeconds = timeInSeconds;
    }

    // Building the texts message in analysis text view
    List<GnssMeasurement> measurements = sortByCarrierToNoiseRatio(new ArrayList<>(event.getMeasurements()));
    SpannableStringBuilder builder = new SpannableStringBuilder();
    double currentAverage = 0;
    if (measurements.size() >= NUMBER_OF_STRONGEST_SATELLITES) {
        mAverageCn0 = (mAverageCn0 * mMeasurementCount
                + (measurements.get(0).getCn0DbHz() + measurements.get(1).getCn0DbHz()
                        + measurements.get(2).getCn0DbHz() + measurements.get(3).getCn0DbHz())
                        / NUMBER_OF_STRONGEST_SATELLITES)
                / (++mMeasurementCount);
        currentAverage = (measurements.get(0).getCn0DbHz() + measurements.get(1).getCn0DbHz()
                + measurements.get(2).getCn0DbHz() + measurements.get(3).getCn0DbHz())
                / NUMBER_OF_STRONGEST_SATELLITES;
    }
    builder.append(getString(R.string.history_average_hint, sDataFormat.format(mAverageCn0) + "\n"));
    builder.append(getString(R.string.current_average_hint, sDataFormat.format(currentAverage) + "\n"));
    for (int i = 0; i < NUMBER_OF_STRONGEST_SATELLITES && i < measurements.size(); i++) {
        int start = builder.length();
        builder.append(mDataSetManager.getConstellationPrefix(measurements.get(i).getConstellationType())
                + measurements.get(i).getSvid() + ": " + sDataFormat.format(measurements.get(i).getCn0DbHz())
                + "\n");
        int end = builder.length();
        builder.setSpan(
                new ForegroundColorSpan(mColorMap.getColor(measurements.get(i).getSvid(),
                        measurements.get(i).getConstellationType())),
                start, end, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
    }
    builder.append(getString(R.string.satellite_number_sum_hint, measurements.size()));
    mAnalysisView.setText(builder);

    // Adding incoming data into Dataset
    mLastTimeReceivedSeconds = timeInSeconds - mInitialTimeSeconds;
    for (GnssMeasurement measurement : measurements) {
        int constellationType = measurement.getConstellationType();
        int svID = measurement.getSvid();
        if (constellationType != GnssStatus.CONSTELLATION_UNKNOWN) {
            mDataSetManager.addValue(CN0_TAB, constellationType, svID, mLastTimeReceivedSeconds,
                    measurement.getCn0DbHz());
        }
    }

    mDataSetManager.fillInDiscontinuity(CN0_TAB, mLastTimeReceivedSeconds);

    // Checks if the plot has reached the end of frame and resize
    if (mLastTimeReceivedSeconds > mCurrentRenderer.getXAxisMax()) {
        mCurrentRenderer.setXAxisMax(mLastTimeReceivedSeconds);
        mCurrentRenderer.setXAxisMin(mLastTimeReceivedSeconds - TIME_INTERVAL_SECONDS);
    }

    mChartView.invalidate();
}

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From source file:com.google.android.apps.location.gps.gnsslogger.FileLogger.java

private void writeGnssMeasurementToFile(GnssClock clock, GnssMeasurement measurement) throws IOException {
    String clockStream = String.format("Raw,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s", SystemClock.elapsedRealtime(),
            clock.getTimeNanos(), clock.hasLeapSecond() ? clock.getLeapSecond() : "",
            clock.hasTimeUncertaintyNanos() ? clock.getTimeUncertaintyNanos() : "", clock.getFullBiasNanos(),
            clock.hasBiasNanos() ? clock.getBiasNanos() : "",
            clock.hasBiasUncertaintyNanos() ? clock.getBiasUncertaintyNanos() : "",
            clock.hasDriftNanosPerSecond() ? clock.getDriftNanosPerSecond() : "",
            clock.hasDriftUncertaintyNanosPerSecond() ? clock.getDriftUncertaintyNanosPerSecond() : "",
            clock.getHardwareClockDiscontinuityCount() + ",");
    mFileWriter.write(clockStream);/*from  www.  j  av  a2 s  .  c  om*/

    String measurementStream = String.format("%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s",
            measurement.getSvid(), measurement.getTimeOffsetNanos(), measurement.getState(),
            measurement.getReceivedSvTimeNanos(), measurement.getReceivedSvTimeUncertaintyNanos(),
            measurement.getCn0DbHz(), measurement.getPseudorangeRateMetersPerSecond(),
            measurement.getPseudorangeRateUncertaintyMetersPerSecond(),
            measurement.getAccumulatedDeltaRangeState(), measurement.getAccumulatedDeltaRangeMeters(),
            measurement.getAccumulatedDeltaRangeUncertaintyMeters(),
            measurement.hasCarrierFrequencyHz() ? measurement.getCarrierFrequencyHz() : "",
            measurement.hasCarrierCycles() ? measurement.getCarrierCycles() : "",
            measurement.hasCarrierPhase() ? measurement.getCarrierPhase() : "",
            measurement.hasCarrierPhaseUncertainty() ? measurement.getCarrierPhaseUncertainty() : "",
            measurement.getMultipathIndicator(), measurement.hasSnrInDb() ? measurement.getSnrInDb() : "",
            measurement.getConstellationType(),
            Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && measurement.hasAutomaticGainControlLevelDb()
                    ? measurement.getAutomaticGainControlLevelDb()
                    : "",
            measurement.hasCarrierFrequencyHz() ? measurement.getCarrierFrequencyHz() : "");
    mFileWriter.write(measurementStream);
    mFileWriter.newLine();
}

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