rtklib_lambda.h File Reference

Integer ambiguity resolution. More...

#include "rtklib.h"

Go to the source code of this file.

Macros
#define	SGN_LAMBDA(x)
#define	ROUND_LAMBDA(x)
#define	SWAP_LAMBDA(x, y)

Functions
int	LD (int n, const double *Q, double *L, double *D)
void	gauss (int n, double *L, double *Z, int i, int j)
void	perm (int n, double *L, double *D, int j, double del, double *Z)
void	reduction (int n, double *L, double *D, double *Z)
int	search (int n, int m, const double *L, const double *D, const double *zs, double *zn, double *s)
int	lambda (int n, int m, const double *a, const double *Q, double *F, double *s)
int	lambda_reduction (int n, const double *Q, double *Z)
int	lambda_search (int n, int m, const double *a, const double *Q, double *F, double *s)

Variables
const int	LOOPMAX = 10000

Detailed Description

Integer ambiguity resolution.

Authors

• 2007-2008, T. Takasu
• 2017, Javier Arribas
• 2017, Carles Fernandez

This is a derived work from RTKLIB http://www.rtklib.com/ The original source code at https://github.com/tomojitakasu/RTKLIB is released under the BSD 2-clause license with an additional exclusive clause that does not apply here. This additional clause is reproduced below:

" The software package includes some companion executive binaries or shared libraries necessary to execute APs on Windows. These licenses succeed to the original ones of these software. "

Neither the executive binaries nor the shared libraries are required by, used or included in GNSS-SDR.

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Copyright (C) 2007-2008, T. Takasu Copyright (C) 2017, Javier Arribas Copyright (C) 2017, Carles Fernandez All rights reserved.

SPDX-License-Identifier: BSD-2-Clause

References: [1] P.J.G.Teunissen, The least-square ambiguity decorrelation adjustment: a method for fast GPS ambiguity estimation, J.Geodesy, Vol.70, 65-82, 1995 [2] X.-W.Chang, X.Yang, T.Zhou, MLAMBDA: A modified LAMBDA method for integer least-squares estimation, J.Geodesy, Vol.79, 552-565, 2005

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Definition in file rtklib_lambda.h.

Macro Definition Documentation

ROUND_LAMBDA

#define ROUND_LAMBDA

(

x

)

Value:

(floor((x) + 0.5))

Definition at line 49 of file rtklib_lambda.h.

SGN_LAMBDA

#define SGN_LAMBDA

(

x

)

Value:

((x) <= 0.0 ? -1.0 : 1.0)

Definition at line 48 of file rtklib_lambda.h.

SWAP_LAMBDA

#define SWAP_LAMBDA	(		x,
			y )

Value:

do                    \
    {                 \
        double tmp_;  \
        tmp_ = x;     \
        x = y;        \
        y = tmp_;     \
    }                 \
while (0)

Definition at line 50 of file rtklib_lambda.h.

Variable Documentation

LOOPMAX

const int LOOPMAX = 10000

Definition at line 47 of file rtklib_lambda.h.