Intereferogram generation by cross-multiplication of reference and secondary SLCs. More...

#include <Crossmul.h>

Public Member Functions
void	crossmul (isce3::io::Raster &refSlcRaster, isce3::io::Raster &secSlcRaster, isce3::io::Raster &ifgRaster, isce3::io::Raster &coherence, isce3::io::Raster *rngOffsetRaster=nullptr) const
	Crossmultiply 2 SLCs.

void	doppler (isce3::core::LUT1d< double >, isce3::core::LUT1d< double >)
	Set doppler LUTs for reference and secondary SLCs.

void	refDoppler (isce3::core::LUT1d< double > refDopp)
	Set dopplers LUT for reference SLC.

const isce3::core::LUT1d< double > &	refDoppler () const
	Get doppler LUT for reference SLC.

void	secDoppler (isce3::core::LUT1d< double > secDopp)
	Set dopplers LUT for secondary SLC.

const isce3::core::LUT1d< double > &	secDoppler () const
	Get doppler LUT for secondary SLC.

void	startingRangeShift (double rng_shift)
	Set reference and seconary starting range shift.

double	startingRangeShift () const
	Get reference and secondary starting range shift.

void	rangePixelSpacing (double rgPxlSpacing)
	Set range pixel spacing.

double	rangePixelSpacing () const
	Get range pixel spacing.

void	wavelength (double wvl)
	Set Wavelength.

double	wavelength () const
	Get Wavelength.

void	rangeLooks (int)
	Set number of range looks.

int	rangeLooks () const
	Get number of range looks.

void	azimuthLooks (int)
	Set number of azimuth looks.

int	azimuthLooks () const
	Get number of azimuth looks.

void	oversampleFactor (size_t oversamp)
	Set oversample factor.

size_t	oversampleFactor () const
	Get oversample factor.

void	linesPerBlock (size_t linesPerBlock)
	Set linesPerBlock.

size_t	linesPerBlock () const
	Get linesPerBlock.

bool	multiLookEnabled () const
	Get boolean multilook flag.

void	rangeFrequencyShift (std::valarray< std::complex< float > > &refAvgSpectrum, std::valarray< std::complex< float > > &secAvgSpectrum, std::valarray< double > &rangeFrequencies, size_t linesPerBlockData, size_t fft_size, double &frequencyShift)
	Compute the avergae frequency shift in range direction between two SLCs.

void	getPeakIndex (std::valarray< float > data, size_t &peakIndex)
	estimate the index of the maximum of a vector of data

Detailed Description

Intereferogram generation by cross-multiplication of reference and secondary SLCs.

The secondary SLC must be on the same image grid as the reference SLC,

Member Function Documentation

◆ azimuthLooks()

void isce3::signal::Crossmul::azimuthLooks ( int azimuthLooks )

inline

Set number of azimuth looks.

Parameters

[in] azimuthLooks number of looks in azimuth direction

◆ crossmul()

void isce3::signal::Crossmul::crossmul	(	isce3::io::Raster &	refSlcRaster,
		isce3::io::Raster &	secSlcRaster,
		isce3::io::Raster &	ifgRaster,
		isce3::io::Raster &	coherence,
		isce3::io::Raster *	rngOffsetRaster = nullptr ) const

Crossmultiply 2 SLCs.

Parameters

[in]	refSlcRaster	input raster of reference SLC
[in]	secSlcRaster	input raster of secondary SLC
[out]	ifgRaster	output interferogram raster
[out]	coherenceRaster	output coherence raster
[in]	rngOffsetRaster	optional pointer to range offset raster if provided, interferogram will be flattened

◆ doppler()

void isce3::signal::Crossmul::doppler	(	isce3::core::LUT1d< double >	refSlcDoppler,
		isce3::core::LUT1d< double >	secSlcDoppler )

inline

Set doppler LUTs for reference and secondary SLCs.

Parameters

[in]	refSlcDoppler	2D Doppler polynomial for refernce SLC
[in]	secSlcDoppler	2D Doppler polynomial for secondary SLC

◆ getPeakIndex()

void isce3::signal::Crossmul::getPeakIndex	(	std::valarray< float >	data,
		size_t &	peakIndex )

inline

estimate the index of the maximum of a vector of data

Parameters

[in]	data	a vector to be evaluated for the index of its maximum
[out]	peakIndex	index of the maximum value in data

◆ rangeFrequencyShift()

void isce3::signal::Crossmul::rangeFrequencyShift	(	std::valarray< std::complex< float > > &	refSpectrum,
		std::valarray< std::complex< float > > &	secSpectrum,
		std::valarray< double > &	rangeFrequencies,
		size_t	linesPerBlock,
		size_t	fft_size,
		double &	frequencyShift )

inline

Compute the avergae frequency shift in range direction between two SLCs.

Parameters

[in]	refSpectrum	the spectrum of a block of a complex data
[in]	secSpectrum	the spectrum of a block of complex data
[in]	rangeFrequencies	the frequencies in range direction
[in]	linesPerBlock	number of rows in refSpectrum and secSpectrum
[in]	fft_size	number of columns in refSpectrum and secSpectrum
[out]	estimated	frequency shift between refSpectrum and secSpectrum

◆ rangeLooks()

void isce3::signal::Crossmul::rangeLooks ( int rangeLooks )

inline

Set number of range looks.

Parameters

[in] rangeLooks number of looks in range direction

The documentation for this class was generated from the following files:

/home/runner/work/isce3/isce3/cxx/isce3/signal/Crossmul.h
/home/runner/work/isce3/isce3/cxx/isce3/signal/Crossmul.cpp
/home/runner/work/isce3/isce3/cxx/isce3/signal/Crossmul.icc

Public Member Functions

Detailed Description

Member Function Documentation

◆ azimuthLooks()

◆ crossmul()

◆ doppler()

◆ getPeakIndex()

◆ rangeFrequencyShift()

◆ rangeLooks()