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Time-Orthogonal Waveform Diversity and Joint Domain Localised Algorithm for

Summary: Time-Orthogonal Waveform Diversity
and Joint Domain Localised Algorithm for
Distributed Aperture Radars
L. Landi R. S. Adve
Distributed aperture radars represent an interesting solution for target detection
in strong interference environments. Distributed apertures provide improved angu-
lar resolution or are able to view a target from multiple look-angles, thereby exploit-
ing scintillation. However, due to the large distances between array elements, both
target and interfering sources are in the near field of the antenna array. Further-
more, due to the relative motion between antenna elements and interference sources,
the clutter Doppler frequency is not stationary. Recent works have demonstrated
the benefits of combining frequency diversity and space time adaptive processing for
distributed aperture radars. In this paper a new waveform diversity system model is
developed. Using orthogonal signaling, the receivers can treat the incoming signals
independently, solving several bistatic problems instead of the initial multistatic
problem. We also apply adaptive techniques to counteract the range dependency
of the clutter Doppler frequency. In particular, we apply the joint domain localized
algorithm, specifically chosen due to its need for only limited secondary data.


Source: Adve, Raviraj - Department of Electrical and Computer Engineering, University of Toronto


Collections: Engineering