二次正交解调算法及内建自测试的实现

Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (3): 527-530.

二次正交解调算法及内建自测试的实现

王刚, 乔纯捷, 王跃科

国防科技大学机电工程与自动化学院, 湖南, 长沙, 410073

收稿日期:2007-09-26 修回日期:2007-12-13 出版日期:2009-03-20 发布日期:2010-01-03
作者简介:王刚(1979- ),男,博士研究生,主要研究方向为数字化测试技术.E-mail:wgnudt@yahoo.com.cn

Implementation of quadratic orthogonal demodulation and built-in self test

WANG Gang, QIAO Chun-jie, WANG Yue-ke

Coll. of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073, China

Received:2007-09-26 Revised:2007-12-13 Online:2009-03-20 Published:2010-01-03

摘要/Abstract

摘要： 在阵列信号采集系统中,为了获得48路多频段高频窄带信号的特征,提出了阵列信号正交解调的方案。详细比较了实现正交解调的两种计算方法,提出了阵列信号的"二次正交解调"算法以实现系统的实时信号处理,并给出了在FPGA中阵列信号"二次正交解调"的实现方案。采用内建自测试的方法对"二次正交解调"模块和数据传输通道进行验证测试,在单频正弦信号的基础上叠加伪随机序列作为测试激励,DSP作为响应分析器验证信号特征。通过FPGA实现并验证了"二次正交解调"算法和内建自测试的有效性。

Abstract: In order to obtain the characteristics of 48 narrowband array signals,the method of orthogonal demodulation is presented,and two methods to realize it are compared.A quadratic orthogonal demodulation algorithm is put forward to decrease the demand of operation and memory resource so as to meet real-time processing,and the algorithm is realized by FPGA.A built-in self test(BIST) technology is used to test the quadratic orthogonal demodulation module and data transfer channels,which implements a sine wave adding pseudorandom sequence as test pattern generators.DSP works as a testing response analyzer to analyze signal characteristics.The result shows the effectiveness of the algorithm and BIST.

中图分类号:

TP274

王刚, 乔纯捷, 王跃科. 二次正交解调算法及内建自测试的实现[J]. Journal of Systems Engineering and Electronics, 2009, 31(3): 527-530.

WANG Gang, QIAO Chun-jie, WANG Yue-ke. Implementation of quadratic orthogonal demodulation and built-in self test[J]. Journal of Systems Engineering and Electronics, 2009, 31(3): 527-530.

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