주파수 도약 대역 확산 신호의 도약 패턴 추정을 위한 시간-주파수 순위 벡터 접근법

초록

Frequency-Hopping Spread Spectrum (FHSS) radiates over a wide frequency band, making it difficult for a receiver to capture the entire transmitted spectrum for a non-cooperative context. This paper proposes a algorithm that accurately estimates the Pseudo‐Noise (PN) sequence generating the hopping pattern using only a partially observed band of an FHSS signal under non-cooperative contexts. The method first extracts a rank vector representing the observed hopping pattern frequencies from a time-frequency analysis, then compares this vector against the PN sequences generated by all candidate primitive polynomials, selecting the one with the highest similarity. Comprehensive computer simulations identify the minimum partial-band observation required for reliable PN sequence estimation and analyze the estimation performance.

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