Bistatic Synthetic Aperture Radar Imaging Using Wide-Bandwidth Continuous-Wave Sources
نویسنده
چکیده
Monostatic and bistatic Synthetic Aperture Radar (SAR) imaging systems with Wide-Bandwidth Continuous-Wave (WB-CW) sources have been utilized for military reconnaissance. WB-CW sources are less susceptible than FM-CW sources to Electronic Counter Measures (ECM). The main shortcoming of the WB-CW microwave illumination is that its resultant SAR echoed signal is not composed of distinct Doppler spreadings around specific tones; this creates difficulties to formulate the image formation in the WB-CW SAR systems via the conventional pulse or FM-CW SAR imaging algorithms. The current paper outlines a Time Domain Correlation (TDC) processing method and a Fourier-based processing method for image formation in WB-CW monostatic and bistatic SAR systems. Results are provided.
منابع مشابه
Model and signal processing of bistatic frequency- modulated continuous wave synthetic aperture radar
Bistatic frequency-modulated continuous wave (FMCW) synthetic aperture radar (SAR) mounts the radar transmitter and receiver on separate platforms, which offers considerable capabilities, reliability and flexibility in designing FMCW SAR missions. Moreover, the spatial separation achieves better isolation between transmission and reception channels compared with the monostatic FMCW SAR where th...
متن کاملDemonstration of advanced reconnaissance techniques with the airborne SAR/GMTI sensor PAMIR
PAMIR (Phased Array Multifunctional Imaging Radar) is an experimental airborne radar system that has been designed and built by the Research Institute for High Frequency Physics and Radar Techniques (FHR) of Forschungsgesellschaft für Angewandte Naturwissenschaften (FGAN). The goal is to meet the growing demands for future reconnaissance systems with respect to flexibility and multi-mode operat...
متن کاملAdvances in Bistatic Inverse Synthetic Aperture Radar (Invited Session on Advances in Inverse Synthetic Aperture Radar)
Bistatic geometries are enabled in scenarios where multiple separated transmitters and receivers are employed as well as when illuminators of opportunity are exploited. Bistatic Inverse Synthetic Aperture Radar (B-ISAR) becomes the radar imaging tool for obtaining non-cooperative target images in arbitrary bistatic configurations. Theoretical aspects and real data experiments have been conducte...
متن کاملFocusing Bistatic FMCW SAR Signal by Range Migration Algorithm Based on Fresnel Approximation
Frequency modulated continuous wave (FMCW) technique has recently been employed by synthetic aperture radar (SAR) to decrease the radar cost and volume. However, the operation range is limited by the direct energy leakage from the transmitting channel to receiving channel due to the operation principle of FMCW technique. Bistatic configuration is an efficient way to increase the isolation betwe...
متن کاملImaging Analysis of Space Target in Bistatic ISAR
Abstract. Bistatic angle is an important characteristic parameter of bistatic inverse synthetic aperture radar (ISAR), which is different from monostatic ISAR. Based on the echo model of bistatic ISAR, the impact of time-varying bistatic angle to imaging plane and quality is analyzed. The image distortion mechanism is studied and the distortion angle is estimated. The simulation experiment veri...
متن کامل