复杂体制BOC调制直扩信号已逐渐成为卫星定位导航、通信等领域经常遇到的一类复杂调制信号形式，其检测与估计正逐渐成为信号处理界的热点难点问题。本项研究紧紧围绕该类信号的检测与估计问题展开：①将已有直扩信号盲处理方法改进拓展，以实现对基本BOC调制直扩信号的盲检测与估计；②进一步实现对更加复杂的复合体制BOC调制（包括DBOC、CBOC、TMBOC、MBOC、TDDM-BOC和AltBOC等调制）直扩信号的盲处理；③在多分量、多径衰落、高动态、强噪声、强干扰等复杂环境下实现对复杂体制BOC调制直扩信号的盲处理；④在已知伪码序列等先验信息的前提下更好地解决相关函数多峰模糊性，以实现对复杂环境下的复杂体制BOC调制直扩信号进行捕获与跟踪。通过本项研究，将推动复杂体制BOC调制直扩信号检测与估计理论与方法的完善，解决这些信号在实际应用领域中难以处理的问题，研究成果具有明确的应用方向。

Complex modulation binary offset carrier modulated direct sequence spread spectrum (DS) signals has become a class of complex modulated signal that frequently encountered in the fields of satellite positioning and navigation, communications and other fields, their detection and estimation is becoming a difficult and hot issue in signal processing group.This study focus on the detection and estimation of such signals: ①To improve the existing DS signal blind processing methods, in order to achieve the basic BOC modulation DS signal blind detection and estimation; ②On this basis, further realization of more complex modulation BOC modulated (including DBOC, CBOC, TMBOC, MBOC, TDDM-BOC and AltBOC modulation etc.) DSSS blind signal processing; ③To achieve a complex modulation binary offset carrier modulated DS signal blind processing in the multi-component, multi-path fading, high dynamic, strong noise, strong interference and other complex environment; ④Under the premise of the known priori information of such as pseudo-noise sequence etc., to better address the correlation function multimodal fuzziness, to achieve a complex modulation binary offset carrier modulated DS signals acquisition and tracking under complex environment. Through this study, we will promote and improve the detection and estimation theory and methods of complex modulation binary offset carrier modulated DS signals, to solve difficult problems in the field of practical application, the research results have its clear direction.