MC-CDMA雷達可程式偵測處理器模擬研究

The design and simulation of programmable MC-CDMA radar detection processor

許緯立(Wei-Li Shiu)

指導教授 ： 馬杰

元智大學/工程學院/通訊工程學系/碩士(2004年)

摘要

本論文應用MC-CDMA展頻技術進行多功能相列雷達可程式調變波型設計與模擬。MC-CDMA波形可以用可程式化方法設定16-QAM/64-QAM調變，以提昇雷達抗干擾能力。利用MC-CDMA波形特性與最大似然法則估測目標都卜勒頻率，為了減小估測誤差，在本文中提出四分法似然估測法則進行目標都卜勒頻率估測模擬。並以TI C6x 數位訊號處理器硬體發展平台，進行MC-CDMA雷達可程式偵測處理器之實現與測試。

關鍵字

多載波CDMA ； 最大似然法則 ； 都卜勒頻率 ； 快速傅立葉轉換

並列摘要

This thesis aims at the application of the multicarrier(MC) CDMA on the design and simulation of the programmable modulation waveforms for the phased array radar. Using different modulations, such as 16QAM/64QAM, to improve its anti-jamming capability, can change the MC-CDMA waveforms of the radar. The target Doppler frequency is estimated by utilizing the MC-CDMA waveform characteristics and the maximum likelihood rule. In this thesis, a modified quarter maximum likelihood rule is purposed to estimate the target Doppler estimation. The simulated results demonstrate the Doppler estimation accuracy can be improved for low signal to noise ratio of the receivers. TI 320C6701 DSP evaluation module is used in an experimental platform to realize a programmable MC-CDMA detector prototype.

並列關鍵字

Multicarrier CDMA ； Maximum likelihood rule ； Doppler frequency ； FFT

參考文獻

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