forked from flightaware/dump1090
-
Notifications
You must be signed in to change notification settings - Fork 0
/
stats.c
421 lines (361 loc) · 17.3 KB
/
stats.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
// Part of dump1090, a Mode S message decoder for RTLSDR devices.
//
// stats.c: statistics helpers.
//
// Copyright (c) 2015 Oliver Jowett <[email protected]>
// Copyright (c) 2021 FlightAware LLC
//
// 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 <[email protected]>
//
// 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.
#include "dump1090.h"
void add_timespecs(const struct timespec *x, const struct timespec *y, struct timespec *z)
{
z->tv_sec = x->tv_sec + y->tv_sec;
z->tv_nsec = x->tv_nsec + y->tv_nsec;
z->tv_sec += z->tv_nsec / 1000000000L;
z->tv_nsec = z->tv_nsec % 1000000000L;
}
static void display_range_histogram(struct stats *st);
void display_stats(struct stats *st) {
int j;
time_t tt_start, tt_end;
struct tm tm_start, tm_end;
char tb_start[30], tb_end[30];
printf("\n\n");
tt_start = st->start/1000;
localtime_r(&tt_start, &tm_start);
strftime(tb_start, sizeof(tb_start), "%c %Z", &tm_start);
tt_end = st->end/1000;
localtime_r(&tt_end, &tm_end);
strftime(tb_end, sizeof(tb_end), "%c %Z", &tm_end);
printf("Statistics: %s - %s\n", tb_start, tb_end);
if (!Modes.net_only) {
printf("Local receiver:\n");
printf(" %12llu samples processed\n", (unsigned long long)st->samples_processed);
printf(" %12llu samples dropped\n", (unsigned long long)st->samples_dropped);
printf(" %12u Mode A/C messages received\n", st->demod_modeac);
printf(" %12u Mode-S message preambles received\n", st->demod_preambles);
printf(" %12u with bad message format or invalid CRC\n", st->demod_rejected_bad);
printf(" %12u with unrecognized ICAO address\n", st->demod_rejected_unknown_icao);
printf(" %12u accepted with correct CRC\n", st->demod_accepted[0]);
for (j = 1; j <= Modes.nfix_crc; ++j)
printf(" %12u accepted with %d-bit error repaired\n", st->demod_accepted[j], j);
if (st->noise_power_sum > 0 && st->noise_power_count > 0) {
printf(" %5.1f dBFS noise power\n",
10 * log10(st->noise_power_sum / st->noise_power_count));
} else {
printf(" ----- dBFS noise power\n");
}
if (st->signal_power_sum > 0 && st->signal_power_count > 0) {
printf(" %5.1f dBFS mean signal power\n",
10 * log10(st->signal_power_sum / st->signal_power_count));
} else {
printf(" ----- dBFS mean signal power\n");
}
if (st->peak_signal_power > 0) {
printf(" %5.1f dBFS peak signal power\n",
10 * log10(st->peak_signal_power));
} else {
printf(" ----- dBFS peak signal power\n");
}
printf(" %5u messages with signal power above -3dBFS\n",
st->strong_signal_count);
if (st->sdr_gain >= 0)
printf(" %4.1fdB current SDR gain\n",
sdrGetGainDb(st->sdr_gain));
}
if (st->adaptive_valid) {
printf("Adaptive gain:\n"
" %5u loud undecoded bursts\n"
" %5u loud decoded messages\n"
" %5.1f dBFS latest noise floor\n"
" %5.1f dB latest dynamic range gain upper limit\n"
" %5u gain changes caused by adaptive gain control\n",
st->adaptive_loud_undecoded,
st->adaptive_loud_decoded,
st->adaptive_noise_dbfs,
sdrGetGainDb(st->adaptive_range_gain_limit),
st->adaptive_gain_changes);
uint32_t total_seconds = 0;
for (unsigned i = 0; i < STATS_GAIN_COUNT; ++i)
total_seconds += st->adaptive_gain_seconds[i];
if (total_seconds) {
unsigned count = 0;
for (unsigned i = 0; i < STATS_GAIN_COUNT; ++i) {
count += st->adaptive_gain_seconds[i];
if (count >= total_seconds/2) {
printf(" %5.1f dB median gain\n", sdrGetGainDb(i));
break;
}
}
printf(" Gain histogram:\n");
for (unsigned i = 0; i < STATS_GAIN_COUNT; ++i) {
unsigned seconds = st->adaptive_gain_seconds[i];
if (seconds) {
printf(" %5.1f dB: %5u seconds (%5.1f%%)\n",
sdrGetGainDb(i), seconds, 100.0 * seconds / total_seconds);
}
}
}
}
if (Modes.net) {
printf("Messages from network clients:\n");
printf(" %8u Mode A/C messages received\n", st->remote_received_modeac);
printf(" %8u Mode S messages received\n", st->remote_received_modes);
printf(" %8u with bad message format or invalid CRC\n", st->remote_rejected_bad);
printf(" %8u with unrecognized ICAO address\n", st->remote_rejected_unknown_icao);
printf(" %8u accepted with correct CRC\n", st->remote_accepted[0]);
for (j = 1; j <= Modes.nfix_crc; ++j)
printf(" %8u accepted with %d-bit error repaired\n", st->remote_accepted[j], j);
}
printf("Decoder:\n"
" %8u total usable messages\n",
st->messages_total);
for (unsigned i = 0; i < 32; ++i) {
if (st->messages_by_df[i])
printf(" %8u DF%u messages\n", st->messages_by_df[i], i);
}
printf(" %8u surface position messages received\n"
" %8u airborne position messages received\n"
" %8u global CPR attempts with valid positions\n"
" %8u global CPR attempts with bad data\n"
" %8u global CPR attempts that failed the range check\n"
" %8u global CPR attempts that failed the speed check\n"
" %8u global CPR attempts with insufficient data\n"
" %8u local CPR attempts with valid positions\n"
" %8u aircraft-relative positions\n"
" %8u receiver-relative positions\n"
" %8u local CPR attempts that did not produce useful positions\n"
" %8u local CPR attempts that failed the range check\n"
" %8u local CPR attempts that failed the speed check\n"
" %8u CPR messages that look like transponder failures filtered\n",
st->cpr_surface,
st->cpr_airborne,
st->cpr_global_ok,
st->cpr_global_bad,
st->cpr_global_range_checks,
st->cpr_global_speed_checks,
st->cpr_global_skipped,
st->cpr_local_ok,
st->cpr_local_aircraft_relative,
st->cpr_local_receiver_relative,
st->cpr_local_skipped,
st->cpr_local_range_checks,
st->cpr_local_speed_checks,
st->cpr_filtered);
printf(" %8u non-ES altitude messages from ES-equipped aircraft ignored\n", st->suppressed_altitude_messages);
printf(" %8u unique aircraft tracks\n", st->unique_aircraft);
printf(" %8u aircraft tracks where only one message was seen\n", st->single_message_aircraft);
printf(" %8u aircraft tracks which were not marked reliable\n", st->unreliable_aircraft);
{
uint64_t demod_cpu_millis = (uint64_t)st->demod_cpu.tv_sec*1000UL + st->demod_cpu.tv_nsec/1000000UL;
uint64_t reader_cpu_millis = (uint64_t)st->reader_cpu.tv_sec*1000UL + st->reader_cpu.tv_nsec/1000000UL;
uint64_t background_cpu_millis = (uint64_t)st->background_cpu.tv_sec*1000UL + st->background_cpu.tv_nsec/1000000UL;
printf("CPU load: %5.1f%%\n"
" %5llu ms for demodulation\n"
" %5llu ms for reading from USB\n"
" %5llu ms for network input and background tasks\n",
100.0 * (demod_cpu_millis + reader_cpu_millis + background_cpu_millis) / (st->end - st->start + 1),
(unsigned long long) demod_cpu_millis,
(unsigned long long) reader_cpu_millis,
(unsigned long long) background_cpu_millis);
}
if (Modes.stats_range_histo)
display_range_histogram(st);
fflush(stdout);
}
static void display_range_histogram(struct stats *st)
{
uint32_t peak;
int i, j;
int heights[RANGE_BUCKET_COUNT];
#if 0
#define NPIXELS 4
char *pixels[NPIXELS] = { ".", "o", "O", "|" };
#else
// UTF-8 bar symbols
#define NPIXELS 8
char *pixels[NPIXELS] = {
"\xE2\x96\x81",
"\xE2\x96\x82",
"\xE2\x96\x83",
"\xE2\x96\x84",
"\xE2\x96\x85",
"\xE2\x96\x86",
"\xE2\x96\x87",
"\xE2\x96\x88"
};
#endif
printf ("Range histogram:\n\n");
for (i = 0, peak = 0; i < RANGE_BUCKET_COUNT; ++i) {
if (st->range_histogram[i] > peak)
peak = st->range_histogram[i];
}
for (i = 0; i < RANGE_BUCKET_COUNT; ++i) {
heights[i] = st->range_histogram[i] * 20.0 * NPIXELS / peak;
if (st->range_histogram[i] > 0 && heights[i] == 0)
heights[i] = 1;
}
for (j = 0; j < 20; ++j) {
for (i = 0; i < RANGE_BUCKET_COUNT; ++i) {
int pheight = heights[i] - ((19 - j) * NPIXELS);
if (pheight <= 0)
printf(" ");
else if (pheight >= NPIXELS)
printf("%s", pixels[NPIXELS-1]);
else
printf("%s", pixels[pheight]);
}
printf("\n");
}
for (i = 0; i < RANGE_BUCKET_COUNT/4; ++i) {
printf("----");
}
printf("\n");
for (i = 0; i < RANGE_BUCKET_COUNT/4; ++i) {
printf(" ' ");
}
printf("\n");
for (i = 0; i < RANGE_BUCKET_COUNT/4; ++i) {
int midpoint = round((i*4+1.5) * Modes.maxRange / RANGE_BUCKET_COUNT / 1000);
printf("%03d ", midpoint);
}
printf("km\n");
}
void reset_stats(struct stats *st) {
static struct stats st_zero;
*st = st_zero;
st->sdr_gain = -1;
}
void add_stats(const struct stats *st1, const struct stats *st2, struct stats *target) {
int i;
if (st1->start == 0)
target->start = st2->start;
else if (st2->start == 0)
target->start = st1->start;
else if (st1->start < st2->start)
target->start = st1->start;
else
target->start = st2->start;
const struct stats *newer;
if (st1->end > st2->end || (st1->end == st2->end && st1->start > st2->start)) {
newer = st1;
} else {
newer = st2;
}
target->end = newer->end;
target->demod_preambles = st1->demod_preambles + st2->demod_preambles;
target->demod_rejected_bad = st1->demod_rejected_bad + st2->demod_rejected_bad;
target->demod_rejected_unknown_icao = st1->demod_rejected_unknown_icao + st2->demod_rejected_unknown_icao;
for (i = 0; i < MODES_MAX_BITERRORS+1; ++i)
target->demod_accepted[i] = st1->demod_accepted[i] + st2->demod_accepted[i];
target->demod_modeac = st1->demod_modeac + st2->demod_modeac;
target->samples_processed = st1->samples_processed + st2->samples_processed;
target->samples_dropped = st1->samples_dropped + st2->samples_dropped;
target->sdr_gain = newer->sdr_gain;
add_timespecs(&st1->demod_cpu, &st2->demod_cpu, &target->demod_cpu);
add_timespecs(&st1->reader_cpu, &st2->reader_cpu, &target->reader_cpu);
add_timespecs(&st1->background_cpu, &st2->background_cpu, &target->background_cpu);
// noise power:
target->noise_power_sum = st1->noise_power_sum + st2->noise_power_sum;
target->noise_power_count = st1->noise_power_count + st2->noise_power_count;
// mean signal power:
target->signal_power_sum = st1->signal_power_sum + st2->signal_power_sum;
target->signal_power_count = st1->signal_power_count + st2->signal_power_count;
// peak signal power seen
if (st1->peak_signal_power > st2->peak_signal_power)
target->peak_signal_power = st1->peak_signal_power;
else
target->peak_signal_power = st2->peak_signal_power;
// strong signals
target->strong_signal_count = st1->strong_signal_count + st2->strong_signal_count;
// remote messages:
target->remote_received_modeac = st1->remote_received_modeac + st2->remote_received_modeac;
target->remote_received_modes = st1->remote_received_modes + st2->remote_received_modes;
target->remote_rejected_bad = st1->remote_rejected_bad + st2->remote_rejected_bad;
target->remote_rejected_unknown_icao = st1->remote_rejected_unknown_icao + st2->remote_rejected_unknown_icao;
for (i = 0; i < MODES_MAX_BITERRORS+1; ++i)
target->remote_accepted[i] = st1->remote_accepted[i] + st2->remote_accepted[i];
// total messages:
target->messages_total = st1->messages_total + st2->messages_total;
for (i = 0; i < 32; ++i)
target->messages_by_df[i] = st1->messages_by_df[i] + st2->messages_by_df[i];
// CPR decoding:
target->cpr_surface = st1->cpr_surface + st2->cpr_surface;
target->cpr_airborne = st1->cpr_airborne + st2->cpr_airborne;
target->cpr_global_ok = st1->cpr_global_ok + st2->cpr_global_ok;
target->cpr_global_bad = st1->cpr_global_bad + st2->cpr_global_bad;
target->cpr_global_skipped = st1->cpr_global_skipped + st2->cpr_global_skipped;
target->cpr_global_range_checks = st1->cpr_global_range_checks + st2->cpr_global_range_checks;
target->cpr_global_speed_checks = st1->cpr_global_speed_checks + st2->cpr_global_speed_checks;
target->cpr_local_ok = st1->cpr_local_ok + st2->cpr_local_ok;
target->cpr_local_aircraft_relative = st1->cpr_local_aircraft_relative + st2->cpr_local_aircraft_relative;
target->cpr_local_receiver_relative = st1->cpr_local_receiver_relative + st2->cpr_local_receiver_relative;
target->cpr_local_skipped = st1->cpr_local_skipped + st2->cpr_local_skipped;
target->cpr_local_range_checks = st1->cpr_local_range_checks + st2->cpr_local_range_checks;
target->cpr_local_speed_checks = st1->cpr_local_speed_checks + st2->cpr_local_speed_checks;
target->cpr_filtered = st1->cpr_filtered + st2->cpr_filtered;
target->suppressed_altitude_messages = st1->suppressed_altitude_messages + st2->suppressed_altitude_messages;
// aircraft
target->unique_aircraft = st1->unique_aircraft + st2->unique_aircraft;
target->single_message_aircraft = st1->single_message_aircraft + st2->single_message_aircraft;
target->unreliable_aircraft = st1->unreliable_aircraft + st2->unreliable_aircraft;
// range histogram
for (i = 0; i < RANGE_BUCKET_COUNT; ++i)
target->range_histogram[i] = st1->range_histogram[i] + st2->range_histogram[i];
// adaptive gain measurements
const struct stats *adaptive_best;
if (st1->adaptive_valid && st2->adaptive_valid)
adaptive_best = newer;
else if (st1->adaptive_valid)
adaptive_best = st1;
else
adaptive_best = st2;
target->adaptive_valid = adaptive_best->adaptive_valid;
for (unsigned i = 0; i < STATS_GAIN_COUNT; ++i)
target->adaptive_gain_seconds[i] = st1->adaptive_gain_seconds[i] + st2->adaptive_gain_seconds[i];
target->adaptive_loud_undecoded = st1->adaptive_loud_undecoded + st2->adaptive_loud_undecoded;
target->adaptive_loud_decoded = st1->adaptive_loud_decoded + st2->adaptive_loud_decoded;
target->adaptive_gain_changes = st1->adaptive_gain_changes + st2->adaptive_gain_changes;
target->adaptive_noise_dbfs = adaptive_best->adaptive_noise_dbfs;
target->adaptive_range_gain_limit = adaptive_best->adaptive_range_gain_limit;
}