Slow-Moving Target Detection Performance of an LPI APCN Waveform in Surveillance Applications

On a Closer Look of a Doppler Tolerant Noise Radar Waveform in Surveillance Applications

“…In addition, it examines APCN waveforms featuring phase and amplitude random components, in contrast to the approach in [3] that focuses exclusively on phase randomness. Indeed, the extended configuration augments the level of randomness in APCN waveforms and enhances their LPI and LPE characteristics, as corroborated by the authors of the present work in [22].…”

“…APCN waveforms combine a deterministic Linear Frequency Modulation signal with a stochastic component. Its complex envelope is given by [20,22] s(t) =…”

“…Thus, the contribution of the noisy component to the matched filter output can lead to target misdetection or false alarms due to misinterpretations. In [22], the authors proposed a method to eliminate the spike at τ = 0 by correlating the received signal with the deterministic component of the APCN waveform instead of using the transmit signal's replica in a pulse compression architecture. Figure 3 presents a simplified block diagram of the proposed system implemented in a digital receiver signal processing chain.…”

“…As stated in Equation ( 9), the output of our proposed architecture [22] presents the shape of the sinc function relative to the LFM matched filter component, attenuated by a factor B = α π 2 sin κπ κπ…”

“…In [ 22 ], we expanded the discussion over the performance of APCN waveforms. We derived closed-form expressions to characterize the APCN’s narrowband ambiguity function, the power spectral density, and the spectral containment, thus accounting for random components in the amplitude and phase of the transmitted signal.…”