v1.0.0 - The Singapore Zenith

Sovereign-1: The Singapore Zenith (v1.0.0)The Deterministic Ground-Station for Urban RF EnvironmentsSovereign-1 is a high-performance APT (Automatic Picture Transmission) decoder engineered for the 137MHz VHF satellite band. While traditional decoders rely on software-defined PLLs that fail in high-interference zones, Sovereign-1 utilizes the Phase-Snap Engine, a C++ implementation designed to lock onto the 2400Hz subcarrier with microsecond precision.### Technical BreakthroughsPhase-Snap Synchronization: Instead of time-averaging, the engine uses Cross-Correlation $(\text{Correlation}(t) = \int S(\tau) \cdot R(t+\tau) d\tau)$ to "snap" image pixels to the deterministic 2400Hz clock, eliminating Doppler-induced skew.STFT Spectral Isolation: The "Intel" layer applies a Short-Time Fourier Transform to isolate the subcarrier bandwidth, effectively masking out urban pager and cellular interference in the 137MHz corridor.Analog-to-Digital Precision: Treats the demodulated FM signal as a voltage density map, mapping the 2400Hz AM wave to an 8-bit grayscale depth with enhanced contrast normalization.