8d1df036ae
The DF17/18 values are generally more trustworthy as they have full CRC coverage. Errors in the CRC bits of a DF0/4/16/20 message can result in the contained altitude being attributed to the wrong aircraft.
139 lines
4.7 KiB
C
139 lines
4.7 KiB
C
// Part of dump1090, a Mode S message decoder for RTLSDR devices.
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//
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// stats.c: statistics structures and prototypes.
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//
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// Copyright (c) 2015 Oliver Jowett <oliver@mutability.co.uk>
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//
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// This file is free software: you may copy, redistribute and/or modify it
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// under the terms of the GNU General Public License as published by the
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// Free Software Foundation, either version 2 of the License, or (at your
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// option) any later version.
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//
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// This file is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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// This file incorporates work covered by the following copyright and
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// permission notice:
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//
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// Copyright (C) 2012 by Salvatore Sanfilippo <antirez@gmail.com>
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef DUMP1090_STATS_H
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#define DUMP1090_STATS_H
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struct stats {
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uint64_t start;
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uint64_t end;
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// Mode S demodulator counts:
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uint32_t demod_preambles;
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uint32_t demod_rejected_bad;
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uint32_t demod_rejected_unknown_icao;
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uint32_t demod_accepted[MODES_MAX_BITERRORS+1];
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// Mode A/C demodulator counts:
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uint32_t demod_modeac;
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uint64_t samples_processed;
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uint64_t samples_dropped;
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// timing:
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struct timespec demod_cpu;
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struct timespec reader_cpu;
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struct timespec background_cpu;
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// noise floor:
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double noise_power_sum;
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uint64_t noise_power_count;
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// mean signal power:
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double signal_power_sum;
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uint64_t signal_power_count;
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// peak signal power seen
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double peak_signal_power;
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// number of signals with power > -3dBFS
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uint32_t strong_signal_count;
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// remote messages:
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uint32_t remote_received_modeac;
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uint32_t remote_received_modes;
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uint32_t remote_rejected_bad;
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uint32_t remote_rejected_unknown_icao;
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uint32_t remote_accepted[MODES_MAX_BITERRORS+1];
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// total messages:
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uint32_t messages_total;
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// network:
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uint32_t http_requests;
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// CPR decoding:
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unsigned int cpr_surface;
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unsigned int cpr_airborne;
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unsigned int cpr_global_ok;
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unsigned int cpr_global_bad;
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unsigned int cpr_global_skipped;
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unsigned int cpr_global_range_checks;
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unsigned int cpr_global_speed_checks;
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unsigned int cpr_local_ok;
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unsigned int cpr_local_skipped;
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unsigned int cpr_local_range_checks;
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unsigned int cpr_local_speed_checks;
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unsigned int cpr_local_aircraft_relative;
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unsigned int cpr_local_receiver_relative;
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unsigned int cpr_filtered;
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// number of altitude messages ignored because
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// we had a recent DF17/18 altitude
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unsigned int suppressed_altitude_messages;
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// aircraft:
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// total "new" aircraft (i.e. not seen in the last 30 or 300s)
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unsigned int unique_aircraft;
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// we saw only a single message
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unsigned int single_message_aircraft;
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// range histogram
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#define RANGE_BUCKET_COUNT 76
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uint32_t range_histogram[RANGE_BUCKET_COUNT];
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};
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void add_stats(const struct stats *st1, const struct stats *st2, struct stats *target);
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void display_stats(struct stats *st);
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void reset_stats(struct stats *st);
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void add_timespecs(const struct timespec *x, const struct timespec *y, struct timespec *z);
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#endif
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