Crate kshana 

Modules

allan

altpnt

Alternative-PNT (GPS-denied) navigation packs.

api

Scenario dispatch shared by the CLI and the language bindings.

batch_ls

Gauss–Newton weighted batch least squares — the batch differential corrector.

chart

Shared SVG charting helpers used by the per-pack chart renderers.

cio

IAU 2006/2000A CIO-based celestial-to-terrestrial reduction (GCRS↔CIRS↔ITRS).

cr3bp

Circular restricted three-body problem (CR3BP) for the Earth–Moon system.

detection

Detection-theory primitives for the spoof monitor.

egm2008_data

EGM2008 geopotential spherical-harmonic coefficients to degree/order 70 — AUTO-GENERATED from tools/egm2008_to70.gfc by tools/gen_egm2008.py; do not edit by hand. Fully normalized, tide-free. The EGM2008 model is an NGA public-domain product (via ICGEM). EGM2008_COEFFS are (n, m, Cnm, Snm).

ensemble

Monte Carlo ensembles for the clock-holdover scenario.

ephem

Built-in low-precision analytical ephemerides for the third-body perturbing bodies, so the numerical propagator’s third-body force (crate::forces::third_body_accel) needs no external DE/SPK kernel for a low-fidelity run.

estimator

filter_health

Kalman filter-consistency health monitoring (NIS / NEES).

fom

forces

Orbital force model: two-body gravity, the zonal-harmonic field, and third-body gravity.

frames

Reference-frame reduction and a geodetic ground-station observer.

fusion

Joint Kalman sensor-fusion estimator.

glonass

GLONASS broadcast ephemeris: a PZ-90 state-vector model with RK4 propagation.

gnss_sim

Measurement-domain GNSS simulation: pseudoranges with ionospheric and tropospheric delays.

gravimeter

Cold-atom gravimeter measurement model and a spherical-harmonic gravity-anomaly reference field for gravity-map-matching navigation (GPS-denied alt-PNT).

gravity_sh

Full tesseral spherical-harmonic geopotential — the EGM2008 field to degree/order 70, the high-degree gravity model the numerical propagator’s crate::forces zonal-only field was missing.

hybrid

igrf

IGRF-14 geomagnetic main-field model — an alternative-PNT signal source.

inertial

integrator

Adaptive numerical ODE integration: classical RK4 with step-doubling control, and a Dormand–Prince RK5(4) embedded pair.

ionex

IONEX-style total-electron-content (TEC) maps and the ionospheric range delay.

jamming

RF interference (jamming) model: J/S → effective C/N₀ → loss of lock.

jd2

Two-part (high-precision) Julian dates.

kalman

Two-state Kalman clock estimator.

lunar

Cislunar PNT integrity: ARAIM for a LunaNet-style lunar navigation service.

maneuver

Impulsive / finite-burn maneuvers, a Lambert two-body transfer solver, and a porkchop (departure × arrival C3 / arrival-V∞) sweep — the maneuver-modeling and trajectory-design beachhead.

mapmatch

Map-matching measurement model for terrain-/gravity-referenced navigation.

models

nutation

IAU 2000B nutation and the full TEME→GCRS/J2000 inertial reduction.

oem

CCSDS Orbit Ephemeris Message (OEM) writer.

omm

CCSDS OMM (Orbit Mean-Elements Message, 502.0-B-2) writer.

orbit

Keplerian-orbit propagation and GNSS line-of-sight visibility.

orbit_determination

Orbit determination: recover a satellite’s orbital state from ground-station tracking.

particle_filter

Sequential-importance-resampling (SIR) particle filter.

permalink

Shareable scenario permalinks (self-contained Base64, RFC 4648).

precession

IAU 2006 precession: Fukushima–Williams angles and the precession rotation matrix.

propagator

Numerical orbit propagator: a configurable force model integrated by the adaptive Runge–Kutta driver, the first non-analytic propagator in Kshana (the rest of the orbit stack is the analytic SGP4/SDP4 of crate::sgp4).

raim

Snapshot Receiver Autonomous Integrity Monitoring (RAIM).

report

rinex

RINEX 3 navigation-message (broadcast ephemeris) parser.

rinex_obs

RINEX 3.0x / 4.00 observation-file parser.

run

sbas

SBAS / DO-229E integrity: weighted-least-squares protection levels, the L1/L5 dual-frequency ionosphere-free combination, and a DO-316/DO-229E compliance map.

scenario

security

Spoofing-detection security figure of merit.

sgp4

SGP4/SDP4 analytical orbit propagation.

sp3

SP3-c/d precise-ephemeris reader and writer.

spoof

Active time-spoofing attack demonstrator.

spoof_monitors

RF-layer spoofing monitors: AGC received-power and signal-quality (SQM).

sweep

Trade-study parameter sweeps.

timegeo

Geometric time-transfer corrections: the Sagnac effect and GNSS common-view.

timescales

Time scales and the Julian-date API.

timetransfer

timetransfer_adv

Advanced time-and-frequency transfer.

tle

Two-line element set (TLE) ingestion.

types

walker

Walker-delta constellation design on the validated SGP4 core.