Title :
High resolution object image based on ground based pseudo-random code Cw sar
Author :
Zhang Jun ; Tong Yongmu
Author_Institution :
Dept. of Electron. Eng., Tianjin Univ. of Technol. & Educ., Tianjin, China
Abstract :
Ground based SAR system has many applications in ground structures monitoring. Normally, the radar system is constructed by linear frequency modulation. Pseudo-random code has the properties that its autocorrelation function has sharp peak like noise. In this paper, a new ground based SAR system based on code phase modulation is proposed, and the constructive diagram of ground based pseudo random code SAR system is given. Based on time parallel correlation, the range compression is performed and the azimuth compression is discussed. The simulation results show the efficiency of the algorithm of image forming.
Keywords :
CW radar; data compression; frequency modulation; ground penetrating radar; image coding; phase modulation; remote sensing by radar; synthetic aperture radar; autocorrelation function; azimuth compression; code phase modulation; ground based pseudorandom code CW SAR; high resolution object image; image forming algorithm; linear frequency modulation; range compression; time parallel correlation; Azimuth; Correlation; Image coding; Phase modulation; Signal resolution; Synthetic aperture radar; Pseudo-random code; R-D algorithm; frequency convolution; ground based SAR;
Conference_Titel :
Electronic Measurement & Instruments (ICEMI), 2013 IEEE 11th International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4799-0757-1
DOI :
10.1109/ICEMI.2013.6743106
