适用于BOC(m,n)信号的无模糊捕获技术
收稿日期: 2016-05-03
修回日期: 2016-06-14
网络出版日期: 2016-06-20
基金资助
国家自然科学基金（61376027）
Unambiguous acquisition technique for BOC(m, n) modulated signals
Received date: 2016-05-03
Revised date: 2016-06-14
Online published: 2016-06-20
Supported by
National Natural Science Foundation of China (61376027)
张洪伦 , 巴晓辉 , 陈杰 , 周航 . 适用于BOC(m,n)信号的无模糊捕获技术[J]. 航空学报, 2017 , 38(4) : 320394 -320394 . DOI: 10.7527/S1000-6893.2016.0194
Multiple peaks of autocorrelation function of binary offset carrier (BOC) modulated signal can lead to ambiguity of signal acquisition. To solve the problem, a correlation multiplication side-peak cancellation technique (CMSCT) is proposed. Based on the special property of sub-correlation function of BOC signal, side peaks can be removed by multiplying different sub-correlation functions. Corresponding modified algorithm is presented for the purpose of taking full advantage of all received data to improve the acquisition performance. The complexity of the proposed algorithm as well as its detection probability based on the constant false alarm rate criterion are analyzed and compared with other algorithms. The result of using CMSCT for intermediate frequency sampling signal of Galileo E1C shows that the presented technique can effectively solve the problem of ambiguous acquisition.
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