基于FPGA與DSP的多波束相干測(cè)深算法的實(shí)現(xiàn)
[Abstract]:Multi-beam sounding system plays an irreplaceable role in ocean exploration and underwater engineering. At present, most multi-beam bathymetry equipment use amplitude detection method and phase difference detection method to measure the intermediate beam and edge beam respectively, which leads to the problem of uneven distribution of sounding value in the middle and edge region. Multi-beam coherent sounding algorithm can solve the problem of uneven resolution of traditional algorithms, and can improve the underwater target detection ability of the bathymetric system. This paper presents a multi-beam coherent sounding algorithm based on FPGA and DSP hardware platform. This scheme can fully combine the characteristics of FPGA and DSP chips, which not only saves the system resources, but also improves the processing speed effectively. At the same time, the real-time implementation of the algorithm in practical engineering is solved. The hardware platform FPGA chip of the system is implemented by Altera CycloneII series chip EP2C50F484C, including Hilbert converter, data buffering, subarray partition, zero compensation processing, 128-point FFT beamforming and data uploading, etc. On this basis, the algorithm is optimized to further reduce the burr and metastable state. The DSP chip is a TMS320C6713B chip of TI, the functions of which include calculating the phase difference of coherent signal and obtaining DOA,. TOA information and converted into depth and level information, etc. The performance of the algorithm is greatly improved by the cooperative processing of one FPGA and two pieces of DSP. In addition, the hardware platform also includes 80 channel Ar / D acquisition module, which can complete the data processing more comprehensively and efficiently. In this paper, the correctness of the logic timing of each function module of FPGA is verified by ModelSim time series simulation and Quartus waveform simulation. By comparing the key step data of DSP processing with the simulation data of MATLAB platform, we can get the conclusion that the processing result is basically consistent with the simulation result. Because of the parallelism design of FPGA, the use of internal pipeline technology and the parallel operation of two blocks of DSP, the efficiency of the algorithm has been improved effectively. Through the performance and result analysis of the algorithm, the overall design meets the design requirements and achieves the desired results.
【學(xué)位授予單位】:哈爾濱工程大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2012
【分類號(hào)】:TN911.7;TP368.1
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 劉雁春;暴景陽;李明叁;;我國海洋測(cè)繪技術(shù)的新進(jìn)展[J];測(cè)繪通報(bào);2007年03期
2 張靜亞;周平;;ALTER FPGA器件的配置模式及其實(shí)現(xiàn)方法[J];常熟理工學(xué)院學(xué)報(bào);2007年02期
3 楊煉,管慶;DSP開發(fā)中值得注意的幾個(gè)問題[J];電子產(chǎn)品世界;2003年11期
4 么彬;李海森;周天;魏玉闊;陳寶偉;;多子陣超寬覆蓋海底地形探測(cè)方法試驗(yàn)研究[J];哈爾濱工程大學(xué)學(xué)報(bào);2008年10期
5 李成鋼;王偉偉;閻軍;;傳統(tǒng)多波束系統(tǒng)與具有相干特點(diǎn)的多波束系統(tǒng)的研究[J];海洋測(cè)繪;2007年02期
6 張毅樂;李海森;么彬;周天;;基于相干原理的多波束測(cè)深新算法[J];海洋測(cè)繪;2010年06期
7 聶良春,朱琦;多波束測(cè)深相位檢測(cè)法中一種有效的相位差序列提取方法[J];艦船科學(xué)技術(shù);2003年06期
8 馬利剛;馬鐵華;;基于FPGA的實(shí)時(shí)圖像采集系統(tǒng)設(shè)計(jì)[J];計(jì)量與測(cè)試技術(shù);2009年04期
9 周天,李海森,朱志德,袁延藝;多波束測(cè)深系統(tǒng)多子陣檢測(cè)法的改進(jìn)及其性能分析[J];聲學(xué)技術(shù);2005年03期
10 陽凡林;趙建虎;周豐年;獨(dú)知行;;多波束聲納測(cè)深瞬間到達(dá)角和旅行時(shí)的精確確定[J];武漢大學(xué)學(xué)報(bào)(信息科學(xué)版);2006年03期
相關(guān)碩士學(xué)位論文 前6條
1 張毅樂;多波束相干測(cè)深技術(shù)研究及其算法DSP實(shí)現(xiàn)[D];哈爾濱工程大學(xué);2010年
2 楊貴;FPGA在數(shù)字信號(hào)處理中的應(yīng)用與研究[D];湖南大學(xué);2004年
3 章奇;基于DSP+FPGA架構(gòu)視頻處理系統(tǒng)設(shè)計(jì)及其實(shí)現(xiàn)[D];中國科學(xué)院研究生院(西安光學(xué)精密機(jī)械研究所);2006年
4 張俊輝;多波束測(cè)深系統(tǒng)相干法相位檢測(cè)及其性能分析[D];哈爾濱工程大學(xué);2008年
5 劉文政;高分辨淺水多波束測(cè)深儀模擬系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)[D];哈爾濱工程大學(xué);2008年
6 王衛(wèi)波;多波束測(cè)深算法性能仿真研究[D];哈爾濱工程大學(xué);2009年
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