18 projects
gri-convolve
Ellipsoid convolution for combining geolocation estimates with outlier detection
gri-geosim
Geometric simulation of geolocation scenarios with platforms, sensors, and emitters
gri-plot
3D geolocation visualization and 2D plotting utilities built on Plotly
gri-iono
Ionospheric delay and angular correction models for trans-ionospheric signal propagation
gri-tropo-data
ERA5 data pipeline for generating tropospheric refractivity datasets
gri-tropo
Tropospheric delay and angular corrections based on ITU-R 2019 and ERA5 data
gri-iono-data
Ionospheric data pipeline for solar flux and NeQuickG coefficient datasets
gri-nsepoch
Nanosecond-accurate time representation with embedded epochs and flexible parsing
gri-utils
Core utilities for coordinate conversions, distance calculations, geolocation, and orbital mechanics
gri-fitter
Structured wrapper around scipy.optimize.curve_fit with automatic coefficient extraction
gri-memoize
Per-instance memoization for class methods with full type hint preservation
gri-obs
Typed observation objects for geolocation measurements (TDOA, FDOA, AOA, Range)
gri-sigsim
Object-oriented RF signal simulation with chainable methods and encapsulated state
gri-ell
Statistical ellipsoid representations with lazy coordinate conversions and Mahalanobis distance
gri-terrain
Terrain elevation data access for geolocation applications
gri-signal
Signal processing for filtering, spectral analysis, correlation, and beamforming
gri-pos
Geodetic position handling with lazy coordinate conversion between XYZ and LLA
gri-sandbox
Demos, experiments, and integration tests for the GRI FOSS ecosystem
