Space-user navigation (scenario kind family)

1 scenario kind of the engine v0.38.0. Advisory: analysis output from a research and engineering tool, not type-approved navigation equipment and not a safety-of-life service. Every label here is the engine's or the verification matrix's; a kind is MODELLED unless the matrix says otherwise (how a label is earned: the README's Evidence section).

Topic pages: SSV. Run one: kshana scenarios/gnss-ssv-shell.toml. All families: KINDS.md.

gnss-ssv#

MODELLED GNSS availability and link strength in the Space Service Volume and beyond: for a user on a sphere (the ICG booklet's global shell) or on a Keplerian trajectory (LEO to lunar transfer) it counts, per constellation (GPS, GLONASS, Galileo, BDS, QZSS, NavIC) and for all together, the signals usable above a C/N0 threshold - availability of at least one and of four signals, maximum outage duration, received C/N0, dilution of precision, main-lobe against sidelobe links - with a booklet, parametric or user-supplied transmit pattern, optional limb-ray ionosphere, plasmasphere and atmosphere effects and an optional weak-signal receiver design; also an onboard GNSS extended Kalman filter for HEO and lunar-transfer craft (orbital dynamics, solar radiation pressure, third bodies, clock) and relative navigation of a multi-craft formation by single-differenced pseudoranges. Checked against the ICG SSV booklet tables under a pre-registration (xval/gnss-ssv)

Required fields: shell|trajectory|navigation. Optional: name, constellations, transmit, receiver, atmosphere, formation.

Ledger: MODELLED. Full page, with the inputs, results, evidence and limitations: gnss-ssv.

kshana scenarios/gnss-ssv-heo.toml