Title :
Specification of internal sensor noise to meet SAR motion compensation requirements
Author :
Ebner, Robert E. ; Datta, Nibir K.
Author_Institution :
Litton Syst. Inc., Woodland Hills, CA, USA
Abstract :
A frequency-domain transfer function for synthetic-aperture radar (SAR) processing is derived as a function of SAR aperture time, which may then be used to weight inertial sensor PSD. Methods of emulating autofocus are also discussed. This transfer function essentially transforms inertial sensor noise into equivalent SAR phase noise. The SAR phase-noise spectrum is then used to derive the individual radar parameters of equivalent quadratic phase error, peak side lobe ration, and integrated side lobe ratio. An example of a specification for motion-compensation sensors using the above transfer functions is presented
Keywords :
inertial systems; radar interference; signal processing; transfer functions; SAR motion compensation; SAR phase noise; autofocus emulation; equivalent quadratic phase error; frequency-domain transfer function; integrated side lobe ratio; internal sensor noise; motion-compensation sensors; peak side lobe ration; synthetic-aperture radar; transfer functions; Costs; Image quality; Image sensors; Motion compensation; Phase noise; Radar antennas; Radar imaging; Sensor phenomena and characterization; Synthetic aperture radar; Transfer functions;
Conference_Titel :
Aerospace and Electronics Conference, 1988. NAECON 1988., Proceedings of the IEEE 1988 National
Conference_Location :
Dayton, OH
DOI :
10.1109/NAECON.1988.195022
