v1.5.2

Changes:

• Add pyproj to .toml

v1.5.1

Changes:

• Support for user defined CRS in the GNSSPositionEstimator class
• Update docs
• Minor improvements to error handeling
• Updating from python 3.10 → 3.11 in the devcontainer

GNSS Multipath Analysis Software v1.5.0

Changes:

• Enhanced Satellite Interpolation Algorithm: Significant improvements to the interpolation algorithm for precise satellite coordinates (SP3), ensuring higher accuracy.
  • Changed from Barycentric Lagrange interpolation to using Neville's algorithm for interpolation.
• Improved SP3 File Reading: Enhanced the SP3 file reading routine to support returning data as a pandas DataFrame for easier manipulation and analysis.
• New Python class for Receiver Position Estimation: Added functionality to estimate approximate receiver coordinates using pseudoranges from the RINEX observation file (related to this feature request).
• BeiDou Satellite Bug Fix: Resolved an issue where the software failed when BeiDou had more than 60 satellites this issue
• Minor Bug Fixes: Addressed several smaller bugs to improve overall stability and performance.
• Code Refactoring: Refactored code for better readability, maintainability, and efficiency.
• Updated Documentation and Examples: Improved documentation and provided updated examples to guide users on how to effectively use the software.

GNSS Multipath Analysis Software v1.4.5

Changes:

• Increase robustness
• Update docs

GNSS Multipath Analysis Software v1.4.4

Changes:

• Added class for creating a CSV file containing a subset of the results
• No longer need to plot, to be able to extract SNR data

The result file looks like this:

GNSS Multipath Analysis Software v.1.4.3

The biggest change in this PR is speed improvements. A 24-hour RINEX observation file (30s datarate) that took around 12 min to process before, now takes around 2 minutes due to the use of vectorization.

1. Utilize Vectorization for Signal Delay Estimations

   • Implement vectorization for estimating signal delays to achieve significant speed improvements.

2. Enhancements in Cycle Slip Detection and Multipath Resetting

   • Improve cycle slip detection and the resetting of multipath for each continuous arc.

3. Utilize Vectorization for Conversion/Interpolation Operations

   • Implement vectorization when converting/interpolating from Kepler elements to Earth-Centered, Earth-Fixed (ECEF) coordinates and when converting GLONASS state vectors to ECEF. This optimization results in major speed improvements.

4. Utilize Vectorization for Satellite Elevation and Azimuth Computations

   • Implement vectorization when computing satellite elevation and azimuth angles to achieve better performance.

5. Fix Bug in RinexNav Class

   • Address a bug in the RinexNav class where the first epoch for the first satellite was being skipped.

6. Introduce Typing Hints in Main Function

   • Enhance code readability and maintainability by incorporating typing hints in the main function.

7. Add Zstd Compression as User Option

   • Provide users with the option to choose if one want to use Zstd compression for improved data storage.

8. Default SNR Analysis (Optional to Turn Off)

   • Conduct SNR analysis by default, with the flexibility for users to turn it off if needed.

9. Code Refactoring

   • Conduct necessary refactoring to enhance code structure and maintainability.

GNSS Multipath Analysis Software v.1.4.2

Fixes:

• Prepare for pypi
• Better fontsize and figsize in plots
• Refactoring (remove trailing whitespace etc)

GNSS Multipath Analysis Software v.1.4.0

This release includes the following changes:

• Fix bug in allocation position, azimuth and elevation angles if SP3 file is used. If no multipath estimates was possible all elevation angle become nan. This is now fixed.
• If signals have only zeros, they will be skipped completely. (speed improvement)
• Create a logger-file that logs warnings and errors.
• Fix progress compute satellite coordinates, elevation and azimuth angles (when broad nav is used)
• GLONASS FCN numbers is now read from Rinex navigation file.
• Speed improvements
• Output of readRinexNav is gathered in a dictionary
• Refactoring
• Fix the wrong index of the epoch flag in readRinex module
• Create a Pickle class for compressing, saving and reading a pickle file.
• The result file is now a compressed pickle file (compression ratio up to 30, but depends on the data)
• Wrap the reading function for RINEX nav inside a new class called RinexNav
• Add an argument for data rate in the reading routine for RINEX NAV files (to improve speed)
• Add a progress bar in the reading routine for RINEX NAV (part of the RinexNav class)
• Major improvements regarding stability, robustness, and handling different variants of RINEX observation files.

GNSS Multipath Analysis Software v.1.3.0

Major improvement to robustness and stability.

Add automated test for:

• ECEF2geodb
• ECEF2enu
• compute_azimut_elev
• GNSS_Multipath_Analysis (testing the whole software)
• Fix bug if plotEstimates was set to FALSE. Results was not updated properly.

Other fixes and changes:

• make ECEF2geodb more robust by using arctan2
• prevent error when a code is removed from overview (range2_Code error ([]))
• make epoch counter more robust by using "startswith"
• some refactoring
• Add automated tests as a GitHub action. Trigger by pull requests to dev and master.

GNSS Multipath Analysis Software v.1.2.0

Fixes in v.1.2.0:

• Major improvments of the Rinex v2.xx reading routine (more robust)
• Add support for Signal To Noise Ratio (SNR) in the software
• Added plot that shows both SNR wrt time and elevation angle
• Added polarplot of SNR
• Latex no longer required to run the software (but its recommended to install Latex to make the text formatting in the plots prettier)
• Made barplot for systems with less than two obscodes prettier (not to thick bars)
• Fix a small bug in writeoutputfile for GLONASS
• Bug fix in the computeSatElevation angle. In previous releases angles got computed for satellite that was not visible in the current epoch. This is now fixed.
• Fix float formatting on colorbar in polar plot (now always only 1 decimal)

In this release, among other things, these issues are fixed: #3 and #6