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Increase sensitivity (#2309)

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Increase sensitivity of Weather and SubghzD apps.
This commit is contained in:
Totoo
2024-10-17 10:22:01 +02:00
committed by GitHub
parent cc7123b28d
commit cb3774ad81
9 changed files with 486 additions and 38 deletions
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71
firmware/baseband/proc_weather.cpp
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@@ -39,32 +39,79 @@ void WeatherProcessor::execute(const buffer_c8_t& buffer) {
feed_channel_stats(decim_1_out);
for (size_t i = 0; i < decim_1_out.count; i++) {
threshold = (low_estimate + high_estimate) / 2;
int32_t const hysteresis = threshold / 8; // +-12%
int16_t re = decim_1_out.p[i].real();
int16_t im = decim_1_out.p[i].imag();
uint32_t mag = ((uint32_t)re * (uint32_t)re) + ((uint32_t)im * (uint32_t)im);
mag = (mag >> 12); // Decim samples are calculated with saturated gain . (we could also reduce that sat. param at configure time)
mag = (mag >> 10);
int32_t const ook_low_delta = mag - low_estimate;
bool meashl = currentHiLow;
if (sig_state == STATE_IDLE) {
if (mag > (threshold + hysteresis)) { // just become high
meashl = true;
sig_state = STATE_PULSE;
numg = 0;
} else {
meashl = false; // still low
low_estimate += ook_low_delta / OOK_EST_LOW_RATIO;
low_estimate += ((ook_low_delta > 0) ? 1 : -1); // Hack to compensate for lack of fixed-point scaling
// Calculate default OOK high level estimate
high_estimate = 1.35 * low_estimate; // Default is a ratio of low level
high_estimate = std::max(high_estimate, min_high_level);
high_estimate = std::min(high_estimate, (uint32_t)OOK_MAX_HIGH_LEVEL);
}
} else if (sig_state == STATE_PULSE) {
++numg;
if (numg > 100) numg = 100;
if (mag < (threshold - hysteresis)) {
// check if really a bad value
if (numg < 3) {
// susp
sig_state = STATE_GAP;
} else {
numg = 0;
sig_state = STATE_GAP_START;
}
meashl = false; // low
} else {
high_estimate += mag / OOK_EST_HIGH_RATIO - high_estimate / OOK_EST_HIGH_RATIO;
high_estimate = std::max(high_estimate, min_high_level);
high_estimate = std::min(high_estimate, (uint32_t)OOK_MAX_HIGH_LEVEL);
meashl = true; // still high
}
} else if (sig_state == STATE_GAP_START) {
++numg;
if (mag > (threshold + hysteresis)) { // New pulse?
sig_state = STATE_PULSE;
meashl = true;
} else if (numg >= 3) {
sig_state = STATE_GAP;
meashl = false; // gap
}
} else if (sig_state == STATE_GAP) {
++numg;
if (mag > (threshold + hysteresis)) { // New pulse?
numg = 0;
sig_state = STATE_PULSE;
meashl = true;
} else {
meashl = false;
}
}
bool meashl = (mag > threshold);
tm += mag;
if (meashl == currentHiLow && currentDuration < 30'000'000) // allow pass 'end' signal
{
currentDuration += nsPerDecSamp;
} else { // called on change, so send the last duration and dir.
if (currentDuration >= 30'000'000) sig_state = STATE_IDLE;
if (protoList) protoList->feed(currentHiLow, currentDuration / 1000);
currentDuration = nsPerDecSamp;
currentHiLow = meashl;
}
}
cnt += decim_1_out.count; // TODO , check if it is necessary that xdecim factor.
if (cnt > 90'000) {
threshold = (tm / cnt) / 2;
cnt = 0;
tm = 0;
if (threshold < 50) threshold = 50;
if (threshold > 1700) threshold = 1700;
}
}
void WeatherProcessor::on_message(const Message* const message) {