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中文摘要：
BOC信号是源于GPS现代化计划的一种新型信号，并被广泛应用于未来几大导航系统的信号体制设计中。BOC信号的频谱具有分离性，能够充分利用现有的频谱资源，且其自相关函数的主峰比BPSK信号的窄，能够提供更好的码跟踪精度和抗多径能力，但其多峰特性带来错误捕获问题。根据国内外研究现状，深入研究了BPSK-like、副载波相位对消法、自相关边峰对消、去边峰等4种无模糊度的BOC信号捕获方法，探讨并仿真验证了各自方法的特点及其捕获性能，总结了BOC信号捕获技术的发展方向。
英文摘要：
BOC （binary offset carrier） is a new-type navigation signal derived from GPS （global po- sitioning system） modernization plan, and is widely used in the signal design of several future navigation systems. The spectrum of BOC signal is dissociative, which can make full use of the existing spectrum re- sources. Besides, its peak of the autocorrelation function is narrower than that of BPSK （binary phase shift keying） signal and it can provide better tracking accuracy and better resistance to muhipath. How- ever, multiple peaks of BOC signal cause error capture problem. According to the present research status at home and abroad, four kinds of unambiguous acquisition methods of BOC signal and its development direction are discussed in detail. All methods are simulated and verified by Matlab and the performance of their acquisition is analyzed.
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