v0.8.0: Hifitime & signal processing

Special thanks to @larsnaesbye, @ChristopherRabotin and my friend Julien for their support and contributions to this new version.

• Introduced a Code of Conduct

• package

  • rinex::prelude introduced to import major structures easily
  • rinex::sampling dedicated pkg
  • rinex::processing dedicated pkg
  • rinex::gnss_time dedicated pkg

• parser

  • Navigation Orbits: SBAS identification issue fixed
  • fixed a faulty 1 byte offset when parsing NAV epochs
  • FNAV frames were not correctly parsed
  • INAV frames were not correctly parsed
  • add more thorough CRINEX1 and 3 decompression tests
  • improved CRINEX decompression: some compressed omitted observations were sometimes missed, due to lack of robustness

• Observation RINEX

  • phase alignment method
  • record analysis seriously improved
  • signal combination methods

• Processing & calculations

  • Geometry free signal combination
  • DCBs code biases analysis

• Epoch and Timescales

  • Library is now converted to use Hifitime Epoch.
  • subsecond precision barrier is crossed, theoretical limitation becomes 1 ns
  • Observation RINEX: 100ns precision
  • Navigation RINEX (V2): 0.1s precision
  • Time scales (TAI, GPS, GAL..) naturally supported
  • Leap seconds naturally supported

• IONEX: Ionosphere maps

  • a new kind of RINEX is now supported
  • 2D IONEX fully supported and integrated to CI/CD
  • 3D IONEX theoretically supported but not tested due to lack of data

• CLI:

  • --sv-epoch a new kind of visualization to help determine which vehicle is eligible for a given operation/calculation
  • --epoch-hist: epoch interval / sample rate histogram analysis

Next release:

• MW signal combination (high sensitivity CS detector)
• CS compensations ?
• Conclude code Multipath biases analysis
• Python bindings