Cross-ambiguity characterization of communication waveform features for passive radar

We examine ambiguity functions of long-term evolution (LTE), digital video broadcast (DVB), and digital audio broadcast (DAB) signals. For passive radar, we propose exploiting deterministic signal features. Degradation in cross-ambiguity functions using deterministic features is characterized with respect to the full self-ambiguity function. In some applications, performance trade-offs may be suitable, allowing cost-effective radar implementation, utilizing simplified receivers (without a direct-path channel) and partial matched filters with deterministic features of LTE, DVB, or DAB.