Files
Look4Sat-BA7OPF/core
atsunatsu 5d792a0fc8 fix: apply both uplink and downlink Doppler in linear calculator mapping
The passband mapping happens on the satellite, so both legs of the trip must
carry their own Doppler shift: the uplink shift before the mapping and the
downlink shift after it. The previous implementation mapped the ground
frequency first and applied a single shift, so TX to RX missed the uplink
Doppler and the reverse computation missed the downlink one. Neither function
was the inverse of the other - switching the TX/RX anchor in the calculator
jumped the frequencies by (uplink + downlink) Doppler, 13.5 kHz at 7 km/s for
a U/V transponder.

Adds exact-value and round-trip regressions at non-zero range rates.
2026-10-05 20:00:16 +08:00
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