Laser Radar Echo Signal Processing And Detection Method

At the beginning of 60 years,laser radar whose primary function is to measure distance appeared.Developping for nearly half century,laser rader have been widely applied in many areas,especially in military application because of its particular merits such as high angle-solution,high-speed-solution,high-ditance-solution,nice-anti-jamming ability and good consealment.Recently,in IRAQ War,the precision control and guide weapons depend on laser radar techniques embodied their powerful abilities.The laser radar technique is a very important part in U S military system.In this thesis,we mainly discuss the signal detecting of radar echo and the techniques to process them.We labored on pulse integration,correlation detectingand wavelet techniques and their applications in radar area.Three types pulse integration are introduced i.e video integration,binary integration and frequency domain intrgration. detection.Then,we compared the traditional second-order correlation technique and the high-order correlation technique,analyzed the characteristics of each them.Wavelet transform is the focus of this paper.We analyzed and discuss several aspects i.e multiscale analysis,wavelet threshold denoising and wavelet energy accumulation method.With above method,we simulate in matlab,got many valuable data and conclusions.At the end of this paper,we discuss about the realizition of the echo processing system in brief.