Struct dll_state_t¶

ClassList > dll_state_t

DLL state. More...

• #include <dll_core.h>

Public Attributes¶

Detailed Description¶

Allocate with dll_create() (copies the code), or embed by value and dll_init() (borrows the caller's code). The loop filter lf is a public sub-component so the inline composition helpers can drive it; treat the correlator accumulators and code-phase fields as internal.

Public Attributes Documentation¶

variable acc_e¶

float complex dll_state_t::acc_e;

early correlator accumulator.

variable acc_l¶

float complex dll_state_t::acc_l;

late correlator accumulator.

variable acc_o¶

float complex dll_state_t::acc_o;

offset (noise) correlator accumulator.

variable acc_p¶

float complex dll_state_t::acc_p;

prompt correlator accumulator.

variable bn¶

double dll_state_t::bn;

loop noise bandwidth (retained).

variable chip_pos¶

double dll_state_t::chip_pos;

current prompt code phase, chips.

variable code¶

const uint8_t* dll_state_t::code;

spreading code, one period (0/1 chips).

variable code_rate¶

double dll_state_t::code_rate;

chips advanced per nominal chip (~1.0).

variable inv_sps¶

double dll_state_t::inv_sps;

1 / sps (per-sample chip advance scale).

variable last_error¶

double dll_state_t::last_error;

last discriminator output (loop stress).

variable lf¶

loop_filter_state_t dll_state_t::lf;

2nd-order code PI loop.

variable lock_alpha¶

double dll_state_t::lock_alpha;

EMA coefficient 1/L_eff (L_eff >> n_looks).

variable lock_count¶

size_t dll_state_t::lock_count;

looks accumulated in the current window.

variable lock_nz¶

size_t dll_state_t::lock_nz;

noise looks folded in (cumulative-mean boot).

variable lock_stat¶

double dll_state_t::lock_stat;

last statistic R = sqrt(2 sum|P|^2/E|O|^2).

variable lock_sum¶

double dll_state_t::lock_sum;

running sum|P_k|^2 over the current window.

variable lock_thresh¶

double dll_state_t::lock_thresh;

CFAR threshold eta on R (det_threshold_nc).

variable locked¶

int dll_state_t::locked;

last lock decision (R > eta).

variable n_looks¶

size_t dll_state_t::n_looks;

non-coherent integration depth N.

variable noise_ema¶

double dll_state_t::noise_ema;

EMA of offset power; estimates E|O|^2.

variable noise_guard¶

double dll_state_t::noise_guard;

chips around P/E/L the offset must avoid.

variable off_chips¶

double dll_state_t::off_chips;

this look's offset code phase, whole chips.

variable owns_code¶

int dll_state_t::owns_code;

1 if dll_destroy() frees code.

variable rng¶

uint32_t dll_state_t::rng;

xorshift32 state for the random offset.

variable seed_chip¶

double dll_state_t::seed_chip;

create-time code phase, for reset.

variable seg_chips¶

double dll_state_t::seg_chips;

code phase per partial segment = sf/segments.

variable seg_idx¶

size_t dll_state_t::seg_idx;

current partial index within the epoch.

variable seg_norm¶

double dll_state_t::seg_norm;

nominal samples per segment (prompt scale).

variable segments¶

size_t dll_state_t::segments;

partial correlations per epoch (1 = full).

variable sf¶

size_t dll_state_t::sf;

code length (chips per period).

variable spacing¶

double dll_state_t::spacing;

early/late tap offset, chips (e.g. 0.5).

variable sps¶

size_t dll_state_t::sps;

samples per chip.

variable sum_e¶

double dll_state_t::sum_e;

non-coherent early sum over the epoch.

variable sum_l¶

double dll_state_t::sum_l;

non-coherent late sum over the epoch.

variable zeta¶

double dll_state_t::zeta;

damping factor (retained).

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