Title :
Simulation of ISAR image errors
Author :
Jain, A. ; Patel, Indu
Author_Institution :
Hughes Aircraft Co. Los Angeles, CA, USA
Abstract :
The authors present concepts and show simulation results for a number of situations where the ISAR (inverse synthetic aperture radar) image is degraded by errors introduced by the signal acquisition and data processing. These errors result in degradation of resolution, false targets in the image, geometric distortion of the image, incorrect values for the scattering center RCS (radar cross section) and a raising of the background noise floor. Results from the proposed model are useful in describing the degradation due to the following: errors in measuring rotation angles or frequency steps; phase errors in the incident illumination that are dependent on frequency or rotation angle; variation of the response of target scattering elements over rotational angle; linear or vibrational translation during target resolution; and the geometric distortion arising from the 3-D-to-2-D transformation in the imaging process
Keywords :
computerised picture processing; digital simulation; error analysis; radar cross-sections; telecommunications computing; 3-D-to-2-D transformation; background noise floor; computerised picture processing; data processing; degradation of resolution; false targets; geometric distortion; image errors; inverse synthetic aperture radar; linear translation; phase errors; rotational angle; scattering center radar cross section; signal acquisition; simulation; target resolution; target scattering elements; translation; Data processing; Degradation; Frequency; Image resolution; Inverse synthetic aperture radar; Radar cross section; Radar scattering; Signal processing; Signal resolution; Vibration measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1989. IMTC-89. Conference Record., 6th IEEE
Conference_Location :
Washington, DC
DOI :
10.1109/IMTC.1989.36883
