Characterization of high resolution range and Doppler LADAR

Benjamin C. Flores; Berenice Verdin

doi:10.1117/12.824712

11 August 2009 Characterization of high resolution range and Doppler LADAR

Benjamin C. Flores, Berenice Verdin

Proceedings Volume 7460, Lidar Remote Sensing for Environmental Monitoring X; 74600A (2009) https://doi.org/10.1117/12.824712
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

Compared to microwave radar systems, chaotic ladar has the potential for providing a range resolution well into the mm range. The purpose of this project is to determine the signal processing schemes required to extract range and Doppler information from a chaotic signal scattered by environmental targets. Specifically, a ladar would be driven into the coherence collapse through an external optical resonator, thus generating a chaotic electromagnetic field with a wide rms bandwidth of several GHz. The reflected field would be processed though optical correlation to extract range and Doppler information. Simulations show that the power spectral density properties of the field are dependent on the Lyapunov exponent of the chaotic field, which be exploited to obtain optimum range resolution. A complete statistical analysis of the wideband ambiguity function of the field reveals that the signal has better performance than noise-like signals generated via electro-optic amplitude modulation, thus allowing for high resolution imaging of terrains with pseudo random reflectivity variations.

Citation Download Citation

Benjamin C. Flores and Berenice Verdin "Characterization of high resolution range and Doppler LADAR", Proc. SPIE 7460, Lidar Remote Sensing for Environmental Monitoring X, 74600A (11 August 2009); https://doi.org/10.1117/12.824712

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