Method Of Targets Detection And Trcking In Wideband Radar

Compared with narrowband radars, wideband radars have prominent advantages inmany ways. For instance, more accurately parameter estimation, more information ofthe targets and environment, and more flexible on waveform optimization. Therefore,the research on wideband radar signal processing is significant in both theory andengineering application.This paper is addressed on the wideband radar signal processing and it coversparameter estimation, target tracking and detecting. The work of this paper can besurmmarized as follows:1. Using the maximum likelihood estimation method to derive the mathematicexpression of the time and distance measurement precision, which of the multi-scatterstarget model; and discussed the factors that may be influence the precision; finally,through the simulation test with Swerling Ⅲ to prove the above discussed.2. The performance of several common wideband radar tracking methods areanalysed. Firstly, utilizing the cone target to simulate the warhead, which moving in thescope of radar; then on a hypothesis that the targets have be found, based on single echoto analyze the tracking performance of these several methods; Finally, using morecoherent pulses accumulation, and at low signal-to-noise ratio to track the targets.3. The problem of wideband radar target detection in white Gaussian noise by thereturns of multiple coherent pulses is researched. The precise and approximate modelsof wideband target return are introduced firstly; then the generalized likelihood ratio testdetectors, which based on the Neyman Pearson rule is given. And further study of thisdetector is done when the noise covariance matrix and the target·s speed are unknown.Based on these, we design a wideband radar detection method, and compare itsperformance with other methods.