22 projects
gri-tracksim
Tracking-scenario simulator and replay visualizer over a shared JSONL stream contract
gri-multitrack
Multi-target tracking over gri per-target estimators: ingest/routing, measurement-space scoring, GNN + MFA/MHT association, track lifecycle, LMB existence, and Poisson-binomial cardinality
gri-kalman
Per-target Kalman/IMM tracking: interacting multiple models, maneuver segmentation, RTS smoothing, EKF/UKF observable updates, and a motion-model bank
gri-sandbox
Demos, experiments, and integration tests for the GRI FOSS ecosystem
gri-obs
Typed observation objects for geolocation measurements (TDOA, FDOA, AOA, Range)
gri-ell
Statistical ellipsoid representations with lazy coordinate conversions and Mahalanobis distance
gri-utils
Core utilities for coordinate conversions, distance calculations, geolocation, and orbital mechanics
gri-convolve
Ellipsoid convolution for combining geolocation estimates with outlier detection
gri-terrain
Terrain elevation data access for geolocation applications
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-sigsim
Object-oriented RF signal simulation with chainable methods and encapsulated state
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-pos
Geodetic position handling with lazy coordinate conversion between XYZ and LLA
gri-nsepoch
Nanosecond-accurate time representation with embedded epochs and flexible parsing
gri-fitter
Structured wrapper around scipy.optimize.curve_fit with automatic coefficient extraction
gri-signal
Signal processing for filtering, spectral analysis, correlation, and beamforming
gri-memoize
Per-instance memoization for class methods with full type hint preservation
gri-trajectory
Platform motion trajectories: stationary, linear, turns, great-circle, orbits, SGP4, waypoint/Hermite splines, and segmented composition
