goGPS MATLAB v0.3.0beta
goGPS MATLAB version 0.3.0 beta is available for download.
A summary of the main changes since v0.2.0beta:
Core:
Re-structured the core functions for:
- improving the satellite orbits computation by iterative least squares adjustment together with receiver position and clock
- optimizing the code by removing duplicate function calls and unnecessary ‘for’ cycles (computation speed improved by ~15%)
- making the code more easily understandable and modifiable
Introduced a check on the condition number on the eigenvalues of the normal matrix in the stand-alone least squares positioning algorithm, for detecting ill-conditioned problems and excluding their results from the final solution
Added SP3 (precise ephemeris) positioning
Input:
Improved the RINEX parser
Added a SP3 parser
Output:
Modified the structure of *_position.txt and *_cov.txt output files: fixed-width instead of tab-delimited fields
Added “Date” and “GPS time [hh:mm:ss]” fields to *_position.txt files
Miscellanea:
Added ETRF2000 – ITRF2008 transformation functions
Modified the algorithm for Julian date <-> GPS week/TOW conversion
Speed optimizations
Bug-fixing
Note 1: goGPS binary observation data (*_obs_* and *_eph_*) format was not modified, thus old datasets can be used with the new version without any modification.
Note 2: GUI settings files are also unchanged.
Please report any bug you find or any problem you may have.
If you find goGPS to be useful feel free to post a quick comment in the mailing list!
Posted: November 7th, 2012 under General news, Releases.