| Summary: | 碩士 === 國立中央大學 === 電機工程研究所 === 88 === Radar could be divided into CW radar, pulse radar, and compressed radar. CW radar could be further divided into AM-type, PM-type, and FM-type based on the choice of modulation. FM could be linear or sinusoidal. Pulse radars could be divided into low-pulse repetition interval radar, high-pulse repetition interval radar, and multiple-pulse repetition interval radar. Compressed radar could be divided into chirp radar and coded radar.
When the signals of the multiple-pulse repetition interval radar and the frequency of chirp radar go through a specific instrument, the output signals are different from the original ones. The output signals still need to be recognized by man. This thesis submits an automatic solution to solve this problem. The first step is to classify the signal, and then use Maximal-likelihood criterion to estimate the signal. We use the computer simulation to evaluate the efficiency of signal recognition.
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