Title :
Near-field 2-D and 3-D radar imaging using a chirp scaling algorithm
Author :
Gimeno, Encarna ; Lopez-Sanchez, Juan M.
Author_Institution :
Departamento de Fisica, Ing. Sistemas y Teoria de la Senal, Alicante Univ., Spain
Abstract :
A new chirp scaling algorithm (CSA) has been formulated and tested. This method yields more accurate results when applied to configurations with high coherent integration angles and high bandwidth-to-center-frequency ratios than the original CSA. Moreover, it has been extended to the three-dimensional case when a planar synthetic aperture is employed. The formulation of the new method is justified in this work. In addition, an algorithm version adapted to stepped-frequency radars has been developed. Finally, this technique is implemented and successfully tested with numerical simulations and real data obtained with a ground-based system
Keywords :
chirp modulation; geophysical signal processing; geophysical techniques; radar imaging; remote sensing by radar; synthetic aperture radar; terrain mapping; 2D imaging; 3D imaging; SAR; algorithm; chirp scaling algorithm; geophysical measurement technique; high bandwidth-to-center-frequency ratio; high coherent integration angle; land surface; near field method; radar imaging; radar remote sensing; stepped-frequency radar; synthetic aperture radar; terrain mapping; Aperture antennas; Azimuth; Chirp; Focusing; Fourier transforms; Numerical simulation; Radar imaging; Signal processing; Synthetic aperture radar; System testing;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.976156
