utilities.h File Reference

Utilities for linear interpolation for CUDA. More...

#include <stdexcept>
#include "cuda.h"
#include "math.h"
#include "structs.h"
#include <gsl/gsl_fit.h>

Go to the source code of this file.

Macros
#define	NPWV   1000
#define	PWV_START   0.1
#define	PWV_END   5.5
#define	DPWV   0.0054

Functions
__host__ __device__ void	interpValue (float x, float y, ArrSpec *arrx, ArrSpec *arry, float *vals, int offset, float &out)
__host__ __device__ float	rad_trans (float psd_in, float eta, float psd_parasitic)
__host__ void	resp_calibration (int start, int stop, ArrSpec *f_atm, ArrSpec *pwv_atm, ArrSpec *f_src, float Tp_atm, int nf_ch, float *eta_cascade, float *psd_cascade, float *psd_cmb, int num_stage, float *psd_atm, float *eta_atm, float *filterbank, float *eta_kj_sum, float *Psky, float *Tsky)
__host__ void	fit_calibration (float *Psky, float *Tsky, int nf_ch, float *c0, float *c1)

Detailed Description

Utilities for linear interpolation for CUDA.

Function Documentation

interpValue()

__host__ __device__ void interpValue	(	float	x,
		float	y,
		ArrSpec *	arrx,
		ArrSpec *	arry,
		float *	vals,
		int	offset,
		float &	out
	)

Linearly interpolate bivariate function.

Parameters

x	Point in x to interpolate on.
y	Point in y to interpolate on.
x0	Start of x-coordinates.
y0	Start of y-coordinates.
size_x	Size of array containing x-coordinates.
size_y	Size of array containing y-coordinates.
dx	Stepsize of x.
dy	Stepsize of y.
vals	Function values on grid spanning x and y.
size_vals	Size of array containing values.

Returns

val_interp Interpolated value of function on x0 and y0.

rad_trans()

__host__ __device__ float rad_trans	(	float	psd_in,
		float	eta,
		float	psd_parasitic
	)

Cascade a PSD through a reflector system, and couple to a specific parasitic PSD.

Parameters

P_nu_in	PSD of incoming signal to be cascaded.
eta	Efficiency term associated with cascade.
T_parasitic	Temperature of parasitic source.
nu	Frequency in Hz.

Returns

Cascade output PSD.