Multipath Separation for HF OTHR Waveform Recovery

The problem of non-cooperative HF OTHR periodic waveform recovery is addressed for multimode propagation from the transmitter (Tx) to the intercept receive site (Rx). The solution is derived given a single coherent integration time (CIT, dwell) when no significant inter-mode spatial or Doppler frequency distinctions are present. We demonstrate that a priori restrictions such ...