dump1090/stats.h
Oliver Jowett 19082d92ea Measure signal power / noise power (at least in 2.4MHz mode).
Switch signalLevel back to a power measurement, don't put SNR in there.
But make it a 0.0 - 1.0 double so we're not scaling everywhere.

Adjust for the amplitude offset when calculating power.

Adapt everything else to the new scheme.
2015-01-22 01:01:39 +00:00

129 lines
4.3 KiB
C

// Part of dump1090, a Mode S message decoder for RTLSDR devices.
//
// stats.c: statistics structures and prototypes.
//
// Copyright (c) 2015 Oliver Jowett <oliver@mutability.co.uk>
//
// This file is free software: you may copy, redistribute and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation, either version 2 of the License, or (at your
// option) any later version.
//
// This file is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// This file incorporates work covered by the following copyright and
// permission notice:
//
// Copyright (C) 2012 by Salvatore Sanfilippo <antirez@gmail.com>
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef DUMP1090_STATS_H
#define DUMP1090_STATS_H
// Common stats for non-phase-corrected vs phase-corrected cases
struct demod_stats {
unsigned int demodulated0;
unsigned int demodulated1;
unsigned int demodulated2;
unsigned int demodulated3;
unsigned int goodcrc;
unsigned int goodcrc_byphase[MODES_MAX_PHASE_STATS];
unsigned int badcrc;
unsigned int fixed;
// Histogram of fixed bit errors: index 0 for single bit erros,
// index 1 for double bit errors etc.
unsigned int bit_fix[MODES_MAX_BITERRORS];
};
struct stats {
time_t start;
time_t end;
// Statistics
unsigned int preamble_no_correlation;
unsigned int preamble_not_quiet;
unsigned int valid_preamble;
unsigned int preamble_phase[MODES_MAX_PHASE_STATS];
struct demod_stats demod;
struct demod_stats demod_phasecorrected;
unsigned int http_requests;
unsigned int out_of_phase;
unsigned int DF_Len_Corrected;
unsigned int DF_Type_Corrected;
unsigned int ModeAC;
unsigned int blocks_processed;
unsigned int blocks_dropped;
struct timespec cputime;
// noise floor:
double noise_power_sum;
uint32_t noise_power_count;
// mean signal power:
double signal_power_sum;
uint32_t signal_power_count;
// peak signal power seen
double peak_signal_power;
// number of signals with power > -3dBFS
uint32_t strong_signal_count;
// remote messages:
unsigned int remote_accepted;
unsigned int remote_rejected;
// total messages:
unsigned int messages_total;
// CPR decoding:
unsigned int cpr_global_ok;
unsigned int cpr_global_bad;
unsigned int cpr_global_skipped;
unsigned int cpr_local_ok;
unsigned int cpr_local_skipped;
unsigned int cpr_filtered;
};
void add_stats(const struct stats *st1, const struct stats *st2, struct stats *target);
void display_stats(struct stats *st);
void reset_stats(struct stats *st);
#endif