Abstract
Radar sensor networks, including bi- and multi-static radars, provide several operational advantages, like reduced vulnerability, good system flexibility and an increased radar cross-section. However, radar-to-radar interference suppression is a major problem in distributed radar sensor networks. In this paper, we present a cross-matched filtering-based radar-to-radar interference suppression algorithm. This algorithm first uses an iterative filtering algorithm to suppress the radar-to-radar interferences and, then, separately matched filtering for each radar. Besides the detailed algorithm derivation, extensive numerical simulation examples are performed with the down-chirp and up-chirp waveforms, partially overlapped or inverse chirp rate linearly frequency modulation (LFM) waveforms and orthogonal frequency division multiplexing (ODFM) chirp diverse waveforms. The effectiveness of the algorithm is verified by the simulation results.
Highlights
In recent years, radar sensor networks, including bi- and multi-static radars, have received much attention [1,2,3,4,5,6,7]
Besides the time, phase and antenna synchronization [12,13], radar-to-radar interference is a major problem in radar sensor networks [14], especially when two or more radars are concurrently operating in the same frequency band and, thereby, mutually interfering each another [15]
Radar-to-radar interference is a major problem in radar sensor networks
Summary
Radar sensor networks, including bi- and multi-static radars, have received much attention [1,2,3,4,5,6,7]. A multistatic adaptive pulse compression algorithm was proposed in [26] to separate concurrently received radar signals within the same frequency band given the knowledge of the individual radar waveforms. An adaptive receive filter is estimated for each resolution cell of each received radar signal by utilizing the estimated values of the contemporaneous resolution cells These methods work well for sinusoidal interferences, they are not suitable for dealing with wideband or nonstationary interferences, wideband radar-to-radar interferences that typically occur in distributed radar sensor networks. Only the basic up-chirp and down-chirp waveforms are considered This paper extends this to suppress wideband radar-to-radar interferences in distributed radar sensor networks with an adaptive decision threshold.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
