A Simple Signal Processing Architecture for Instantaneous Radar Polarimetry

Abstract

Abstract-This paper describes a new radar primitive that enables instantaneous radar polarimetry at essentially no increase in signal processing complexity. This primitive coordinates transmission of distinct waveforms on orthogonal polarizations and applies a unitary matched filter bank on receive. This avoids the information loss inherent in single-channel matched filters. A further advantage of this scheme is the elimination of range sidelobes.

Golay complementary waveforms for sparse delay-Doppler radar imaging

“…In [8], [9], a simple scheme of transmitting Golay complementary waveforms in an Alamouti fashion is utilized to enable instantaneous radar polarimetry. Here we integrate this Alamouti scheme with our sparse representation approach to enable recovery of targets over orthogonal polarization channels and to resolve targets based on their full polarization scattering properties.…”

“…We then extend our work to multi-channel radar, by developing a sparse radar imaging approach for dually-polarimetric radar. We combine Alamouti waveform matrices of Golay pairs, originally developed in [8], [9], with sparse representations in Vandermonde frames over each polarization channel to resolve targets based on their full polarization scattering properties. This amounts to applying OMP for sparse target recovery from the outputs of a unitary bank of matched filters, each of which is matched to a Golay complementary waveform.…”

MIMO OFDM chirp waveform design with spread spectrum modulation

“…Moran [9] presented polarization diverse waveforms on multiple channels for MIMO radar which enables detection of smaller radar cross section targets and diversity gains. Gladkova [10] described a family of stepped frequency waveforms to attain high range resolution.…”

Research on instantaneous polarization radar system and external experiment

“…How to acquire the accurate information of PSM of radar target and utilize it effectively have long been concerned in the domains of SAR imaging radar, polarization filter, polarization enhancement, polarization anti-interference, geography remote sensing, and radar target identification [1][2][3][4][5][6][7]. In the past two decades, the studies of radar polarization have been highlightened.…”

“…In the past two decades, the studies of radar polarization have been highlightened. We carried on a lot of basic research on radar target polarization scattering property [5][6][7], polarization target detection [8][9][10][11], polarization filter enhancement [11][12][13][14][15][16][17][18][19][20][21][22], anti-interference [23][24][25], polarization insensitivity array signal processing [26][27][28][29] and polarization identification [30][31][32][33], and have accumulated a large quantity of innovative research results, and have laid a good theoretical foundation for real polarization radar system development.…”