| 北斗信号捕获相位相干算法的设计与实现 |
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| 引用本文： | 黄海生,李龙龙.北斗信号捕获相位相干算法的设计与实现[J].西安邮电学院学报,2014(1):26-30. |
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| 作者姓名： | 黄海生 李龙龙 |
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| 作者单位： | 西安邮电大学电子工程学院,陕西西安710121 |
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| 基金项目： | 陕西省科技统筹创新工程计划战略基金资助项目（2012KTCQ01-06）;陕西省教育厅服务地方专项基金资助项目（2013JC10） |
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| 摘 要： | 针对北斗二号卫星导航系统信号捕获运算量大的问题,提出一种利用相位相干算法搜索起始码相位的方法,并给出基于现场可编程门阵列(FPGA)的相位相干算法的具体实现方案,算法中关于旋转因子运算的问题主要借助坐标旋转数字计算方法和查找表方法得以解决。编译综合及仿真结果皆表明,与传统快速傅里叶变化(FFT)算法相比,新方法只需用到复数加法,运算量小,且能正确捕获信号。
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| 关 键 词： | 相位相干算法 旋转因子 现场可编程门阵列(FPGA) 坐标旋转数字计算方法(CORDIC) |
Design and implement of Beidou signal acquisition phase coherence algorithm |
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| HUANG Haisheng,LI Longlong.Design and implement of Beidou signal acquisition phase coherence algorithm[J].Journal of Xi'an Institute of Posts and Telecommunications,2014(1):26-30. |
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| Authors: | HUANG Haisheng LI Longlong |
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| Affiliation: | (School of Electronic Engineering, Xian University of Posts and Telecommunications, Xi＇an 710121, China) |
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| Abstract: | the large s implement Algorithm algorithm A method using Phase Coherence Algorithm to search initial code phase is proposed for ignal acquisition and computation on BeiDou II Navigation Satellite System. A specific ation scheme based on Field-Programmable Gate Array （FPGA） of Phase Coherence is given accordingly. It mainly use Coordinate Rotation Digital Computer （CORDIC） and look-up table method to solve the twiddle factor operation problems in the algo- rithm. This method is validated on the that compared to the traditional Fast greatly reduce computation and can cor cyclone II series FPGA of Altera. Simulation results show Fourier Transform （FFT） algorithm, this method can rectly acquire signal by only using the complex addition. |
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| Keywords: | phase coherence algorithms twiddle factor field-programmable gate array（FPGA） coordinate rotation digital computer（CORDIC） |
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