Struct dp_specan_state_t¶

ClassList > dp_specan_state_t

Specan state. Allocate with dp_specan_create() .

• #include <specan_core.h>

Public Attributes¶

Public Attributes Documentation¶

variable beta¶

double dp_specan_state_t::beta;

Kaiser beta realising rbw (>= ~12).

variable center¶

double dp_specan_state_t::center;

Display center frequency, Hz.

variable ddc¶

dp_ddc_state_t* dp_specan_state_t::ddc;

Tuner + decimator (mix to DC, resample).

variable disp_lo¶

size_t dp_specan_state_t::disp_lo;

First display bin in the DC-centred array.

variable disp_n¶

size_t dp_specan_state_t::disp_n;

Display band length (cropped bins).

variable fs_in¶

double dp_specan_state_t::fs_in;

Input sample rate, Hz.

variable fs_out¶

double dp_specan_state_t::fs_out;

Decimated rate, Hz (= span·1.28, ≤ fs_in).

variable n¶

size_t dp_specan_state_t::n;

Window length, a power of two >= 16.

variable navg¶

size_t dp_specan_state_t::navg;

Segments averaged per emitted frame.

variable nfft¶

size_t dp_specan_state_t::nfft;

Transform length, max(n, 512).

variable offset_db¶

double dp_specan_state_t::offset_db;

Additive dB offset on the display (dBm cal).

variable pend¶

float _Complex* dp_specan_state_t::pend;

Decimated samples awaiting a frame.

variable pend_cap¶

size_t dp_specan_state_t::pend_cap;

Elements allocated in pend.

variable pend_len¶

size_t dp_specan_state_t::pend_len;

Valid samples in pend.

variable psd¶

dp_psd_state_t* dp_specan_state_t::psd;

Averaging PSD at the decimated rate.

variable pwr¶

float* dp_specan_state_t::pwr;

Two-sided linear power scratch, length nfft.

variable rbw¶

double dp_specan_state_t::rbw;

Realised resolution bandwidth, Hz.

variable scratch¶

float _Complex* dp_specan_state_t::scratch;

Ddc output scratch, capacity scratch_cap.

variable scratch_cap¶

size_t dp_specan_state_t::scratch_cap;

Elements allocated in scratch.

variable span¶

double dp_specan_state_t::span;

Display span, Hz (clamped to fs/1.28).

variable src_center¶

double dp_specan_state_t::src_center;

Source center frequency, Hz.

The documentation for this class was generated from the following file native/inc/doppler/specan/specan_core.h