Struct dsss_burst_receiver_state_t¶

ClassList > dsss_burst_receiver_state_t

DsssBurstReceiver state. More...

• #include <dsss_burst_receiver_core.h>

Public Attributes¶

Detailed Description¶

Allocate with dsss_burst_receiver_create().

Public Attributes Documentation¶

variable acq_code¶

uint8_t* dsss_burst_receiver_state_t::acq_code;

Preamble code, owned copy.

variable acq_code_len¶

size_t dsss_burst_receiver_state_t::acq_code_len;

Preamble code length, chips.

variable burst_len¶

size_t dsss_burst_receiver_state_t::burst_len;

Preamble + spread frame, in samples.

variable cap¶

burst_capture_state_t* dsss_burst_receiver_state_t::cap;

Search, refine, retain, emit. Owns the acquisition engine, the history ring and the claim rule everything about FINDING a burst. This object owns what to DO with one.

variable chip_rate¶

double dsss_burst_receiver_state_t::chip_rate;

Chip rate, Hz.

variable cn0_dbhz_est¶

double dsss_burst_receiver_state_t::cn0_dbhz_est;

C/N0 lower bound, dB-Hz (saturating).

variable code_period¶

size_t dsss_burst_receiver_state_t::code_period;

One preamble repetition, in SAMPLES. The modulus acq's code_phase is a residue of, so every epoch ambiguity in this object is stated against it.

variable data_code¶

uint8_t* dsss_burst_receiver_state_t::data_code;

Payload spreading code, owned copy.

variable data_code_len¶

size_t dsss_burst_receiver_state_t::data_code_len;

Data code length, chips.

variable demod¶

burst_demod_state_t* dsss_burst_receiver_state_t::demod;

Demod stage, re-seeded per burst.

variable doppler_hz_est¶

double dsss_burst_receiver_state_t::doppler_hz_est;

Signed coarse Doppler, Hz.

variable doppler_res_hz¶

double dsss_burst_receiver_state_t::doppler_res_hz;

Width of that estimate.

variable est_freq_hz¶

double dsss_burst_receiver_state_t::est_freq_hz;

Demod's own residual estimate, Hz.

variable est_rate_hz¶

double dsss_burst_receiver_state_t::est_rate_hz;

Demod's own chirp-rate estimate.

variable est_snr_db¶

double dsss_burst_receiver_state_t::est_snr_db;

Demod's own post-decode SNR estimate.

variable ev¶

dsss_br_event_t* dsss_burst_receiver_state_t::ev;

One record per burst returned.

variable ev_cap¶

size_t dsss_burst_receiver_state_t::ev_cap;

Allocated records.

variable ev_len¶

size_t dsss_burst_receiver_state_t::ev_len;

Records the last push() wrote.

variable frame_bits¶

size_t dsss_burst_receiver_state_t::frame_bits;

The frame's length, from the description the stride of a row in llr.

variable frame_syms¶

size_t dsss_burst_receiver_state_t::frame_syms;

Symbols the frame occupies after the sync word, and so bits per burst out of push(). What they MEAN is a frame description's business, one layer up (doppler#1022).

variable frame_valid¶

int dsss_burst_receiver_state_t::frame_valid;

The last window's frame passed its error detection THIS receiver's frame carries a CRC-16 trailer. The verdict the capture cannot reach: a window that failed is given back with burst_capture_release(), so a decoy cannot own the span of a real burst behind it (doppler#1181, doppler#1004).

variable llr¶

float* dsss_burst_receiver_state_t::llr;

The soft bits of every burst the last push returned, concatenated: burst i starts at i*frame_bits. Scratch, like ev it describes one call and is never serialized.

variable llr_cap¶

size_t dsss_burst_receiver_state_t::llr_cap;

Allocated floats.

variable llr_len¶

size_t dsss_burst_receiver_state_t::llr_len;

Floats written by the last push.

variable n_bursts¶

uint64_t dsss_burst_receiver_state_t::n_bursts;

Bursts DEMODULATED, lifetime. Distinct from the capture's own count, which is windows EMITTED: they differ by any window the demodulator refused, and that difference is the thing worth seeing.

variable preamble_start¶

uint64_t dsss_burst_receiver_state_t::preamble_start;

Stream-absolute preamble start. Never late.

variable refine_margin¶

double dsss_burst_receiver_state_t::refine_margin;

Winning preamble correlation over its nearest whole-period competitor. Near 1 means the period was NOT resolved.

variable reps¶

size_t dsss_burst_receiver_state_t::reps;

Preamble code repetitions.

variable spc¶

size_t dsss_burst_receiver_state_t::spc;

Samples per chip.

variable sync¶

uint8_t* dsss_burst_receiver_state_t::sync;

Frame sync word, owned copy.

variable sync_len¶

size_t dsss_burst_receiver_state_t::sync_len;

Sync word length, symbols.

The documentation for this class was generated from the following file native/inc/dsss_burst_receiver/dsss_burst_receiver_core.h