Title :
Delay-doppler ambiguity function of ultrawideband-throb signals
Author :
Hussain, Malek G M
Author_Institution :
Electr. Eng. Dept., Kuwait Univ., Safat
Abstract :
The performance of ultrawideband (UWB) radar in target detection, resolution, and recognition depends on the structure of the radar waveform. In this paper, the principles of waveform diversity and design (WDD) for generating periodic and orthogonal UWB-impulse signals are described. A mathematical model for a UWB-throb signal that yields the practical advantages of the widely used linear frequency-modulation (FM) ldquochirprdquo signal is presented. The structure of the UWB-throb signal is designed based on a pulse-time modulation scheme. The delay-Doppler ambiguity function of the UWB-throb signal is derived for performance analysis. Computer plots of the UWB-throb signal, its autocorrelation function, and ambiguity function are generated to illustrate its characteristics and advantages for high-resolution impulse radar.
Keywords :
frequency modulation; mathematical analysis; pulse time modulation; radar detection; radar resolution; ultra wideband radar; autocorrelation function; delay-Doppler ambiguity function; high-resolution impulse radar; linear frequency-modulation chirp signal; orthogonal UWB-impulse signals; periodic signals; pulse-time modulation scheme; radar waveform; target detection; ultrawideband radar; ultrawideband-throb signals; waveform diversity and design; Delay; Mathematical model; Object detection; Pulse modulation; Signal design; Signal generators; Signal resolution; Target recognition; Ultra wideband radar; Ultra wideband technology;
Conference_Titel :
Ultra-Wideband, 2008. ICUWB 2008. IEEE International Conference on
Conference_Location :
Hannover
Print_ISBN :
978-1-4244-2216-6
Electronic_ISBN :
978-1-4244-1827-5
DOI :
10.1109/ICUWB.2008.4653360
