MATLAB Answers

computation of GPS receiver position based on RINEX observation file

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devika hs
devika hs on 7 Mar 2019
Commented: Jan on 20 Nov 2019
IM getting the error like "undefined function 'read' for input argument of type 'char'".
for the line [obs,rec_xyz]=read('filename');
can anybody help me to solve this error.

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Answers (2)

Meysam Mahooti
Meysam Mahooti on 1 Nov 2019
Edited: Meysam Mahooti on 16 Nov 2019
Initial guess of GPS receiver position is obtained from observation file and is updated using broadcast orbits, pseudorange and carrier phase measurements. Here broadcast orbits are computed form navigation file and then rough distance between user and satellite is calculated. By subtracting computed distance and observed one, the residual matrix is constructed for Least Squares technique.

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Jan
Jan on 4 Nov 2019
There is no relation between the question an this FileExchange submission.
Jan
Jan on 20 Nov 2019
You have edited the answer, but it still does not match the question in any way. The OP asked for a missing read() command. So advertising your FileExchange submission, which calculates something completely different, is not useful.

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Jim Riggs
Jim Riggs on 4 Nov 2019
Edited: Jim Riggs on 4 Nov 2019
You are using the wrong function to try to read a file.
The function 'read' operates on datastores, or images, or video frames, etc. but not on files.

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