Title :
Effect of Doppler centroid mis-tracking on the parameter estimation of point target complex signals
Author :
Touzi, R. ; Raney, R.K.
Author_Institution :
Coll. Militaire Royal de St-Jean, Quebec, Que., Canada
Abstract :
The effect of errors in zero Doppler estimation on the accuracy of the three methods currently used for estimation of point target signal parameters, is analyzed. It is shown that for reliable estimation of the phase, the Doppler centroid should be well corrected before the application of either the peak method (PM) or the complex integration method (CIM). For radiometric estimation, the Doppler offset sensitivity is comparable for the PM, the CIM, and the intensity integration method (IIM). All of them are insensitive to moderate Doppler centroid tracking errors for intensity estimation
Keywords :
geophysical signal processing; geophysical techniques; image registration; radar applications; radar imaging; radar signal processing; remote sensing by radar; spaceborne radar; synthetic aperture radar; Doppler centroid mis-tracking; Doppler offset sensitivity; SAR imaging; accuracy; complex integration method; geophysical measurement technique; image processing; image registration; intensity integration method; land surface terrain mapping; parameter estimation; peak method; phase; point target complex signals; radar remote sensing; radiometric estimation; reliable estimation; synthetic aperture radar; tracking errors; zero Doppler estimation error; Azimuth; Calibration; Computer integrated manufacturing; Filters; Focusing; Parameter estimation; Phase estimation; Phase modulation; Radiometry; Signal processing;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1994. IGARSS '94. Surface and Atmospheric Remote Sensing: Technologies, Data Analysis and Interpretation., International
Conference_Location :
Pasadena, CA
Print_ISBN :
0-7803-1497-2
DOI :
10.1109/IGARSS.1994.399695
