Title :
Wide-Band High Resolution Homing Sonar Echo Detect Based On Spread Spectrum Technology
Author :
Jianyun, Chen ; Xiaopen, Zhong ; XuZhe, Fen ; JianWei, Yan
Author_Institution :
Nat. Univ. of Defense Technol., Changsha
Abstract :
This paper propose and analyze high resolution auto-navigation sonar system based on DS/SS technology. Compare to traditional auto-navigation sonar system, the system have big time and frequency range , can provide high distance and speed resolution and good anti-interference capability. Paper discuss the principle of waveform design and enduce ambiguity function of DS/SS modulation signals. In the case of high-speed target, paper provided and proved a algorithm using CZT which can estimate Doppler frequency offset and target speed in very low SNR condition.
Keywords :
Doppler effect; signal resolution; sonar detection; spread spectrum communication; DS/SS modulation signals; Doppler frequency offset; anti-interference capability; auto-navigation sonar system; high-speed target; homing sonar echo detection; spread spectrum technology; wide-band high resolution; Frequency estimation; Pulse modulation; Signal processing; Signal resolution; Sonar detection; Sonar measurements; Spread spectrum communication; Spread spectrum radar; Velocity measurement; Wideband; Ambiguity Function; CZT Algorithm; Direct sequence spread spectrum; WideBand Homing sonar;
Conference_Titel :
Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-1136-8
Electronic_ISBN :
978-1-4244-1136-8
DOI :
10.1109/ICEMI.2007.4350518
