Backscatter characteristics of buried targets measured using an ultrawideband polarimetric random noise radar

Hoffmeyer, Paul D.; Xa, Yi; Narayanan, Ram M.; Curtis, John O.

doi:10.1109/igarss.1996.516962

Cited by 2 publications

(1 citation statement)

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“…The performance and applications have been demonstrated by Narayanan et al [10], where a noise source with constant power spectral density in the 1-2-GHz range is used. Using the same source, Doppler estimation [11] and backscatter characteristics of buried targets have been reported [12]. Theoretical and practical characteristics of a broad-band random noise radar in the frequency range between 10.7-12 GHz with a bandwidth of 1.3 GHz have been investigated [13], and the issue in the electronic counter-countermeasure capabilities of a band-limited random noise imaging radar has been discussed [6].…”

Section: Introductionmentioning

confidence: 99%

Chaotic radar using nonlinear laser dynamics

Lin

Liu

2004

IEEE J. Quantum Electron.

255

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A novel chaotic radar (CRADAR) system utilizing laser chaos is investigated both numerically and experimentally. Compared with conventional radars, the proposed CRADAR has the advantages of very-high-range resolution, unambiguous correlation profile, possibility of secure detection, low probability of intercept, and high electromagnetic compatibility. Generated by an optically injected semiconductor laser, chaotic waveforms with bandwidths larger than 10 GHz can be readily obtained. In this paper, the time series, the phase portraits, and the power spectra of the chaotic states are presented. The correlation traces between the signal and the reference waveforms are plotted. The peak sidelobe level with different correlation lengths is investigated. The capability of anti-jamming and the performance under additive white Gaussian noise are studied. To show the feasibility of CRADAR, proof-of-concept experiments using a pair of planar antennas with a 1.5-GHz bandwidth covering the range from 1.5 to 3 GHz are demonstrated. A range resolution of 9 cm is achieved, which is currently limited not by the bandwidth of the chaotic states but by the detection bandwidths of the real-time oscilloscope and the antennas used.

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