how to read a gps Rinex observation and navigation files in matlab directly

Hey guyz please help me out, i am trying to read a Rinex file (both observation and Navigation) for one of my gps receiver, i want to read it in MATLAB version r2009a.

[Markandeya Janaswamy]

https://mathworks.com/help/nav/ref/rinexread.html

the function rinexread meets your needs. But it is available from R2022a onwards in Navigation Toolbox.

Answer 1

[Peter Spanik]

Hello Mohammed,

As far as I know, Matlab does not support reading of RINEX observation/navigation files. I created functions and classes to read RINEX and other GNSS-related files (see GNSS-toolbox). You can load RINEX to Matlab OBSRNX object as following:

addpath(genpath('path_to_GNSS-toolbox/src')); % Add path to toolbox functionality
obs = OBSRNX('your_rinex_filepath');

When the OBSRNX object is created in Matlab you can querry observations and perform slicing as you want. I do not test it under R2009a, but I guess it should work.

Answer 2

[José-Luis]

No need to reinvent the wheel

[Abdelrahim]

https://uk.mathworks.com/matlabcentral/fileexchange/56730-gps-receiver-position

Answer 3

[Meysam Mahooti]

https://www.mathworks.com/matlabcentral/fileexchange/56730-gps-receiver-position?s_tid=srchtitle

Answer 4

[Imtiaz nabi]

Hello, I have downloaded the code and was using it for testing my RINEX navigation and observation files but the function keeps giving me errors.

Can you please guide me what am I doing wrong here?

thank you and please find the attached screen shot to this comment.

[Meysam Mahooti]

You need to modify the code based on version of your RINEX files. My code works only with RINEX 2.10 files.

[Walter Roberson]

str2num is not returning a scalar. Possibly the text to be converted is blank or has more than one number.

In most cases, str2double should be used if exactly one number is expected.

[Imtiaz nabi]

Thank you I will see if I can modify the code for the latest RINEX versions.

Answer 5

[Markandeya Janaswamy]

MATLAB supports reading RINEX data directly into MATLAB from R2022a onwards. Use the function rinexread. See https://mathworks.com/help/nav/ref/rinexread.html