【作者】 姚铮； 张晓明； 陆明泉；

【Author】 YAO Zheng~1,ZHANG Xiaoming~(1,2),LU Mingquan~1 1.Department of Electronic Engineering,Tsinghua University,Beijing 100084,China 2.Beijing Global Center of Information Application and Development,Beijing 100094,China

【机构】 清华大学电子工程系； 北京环球信息应用开发中心；

【摘要】 在全球导航卫星系统的信号体制设计中,互操作信号的设计具有其特殊性。因为互操作信号受众遍及全球,且应用领域广阔,需要面向多种不同的应用需求。针对互操作信号在性能与处理复杂度上平衡点不唯一的特点,本文提出了一种非匹配接收模式下的信号性能评估方法,在此基础上为北斗二期B1频点互操作信号提出了四种参考调制方案,并从综合接收性能的角度给出一种优选方案。与国际上现有的互操作信号调制方案相比,提出的优选方案不仅具有自主知识产权,而且可获得最小的解调损失以及最佳的跟踪性能,在处理方式灵活性方面具有其独特的优势,可以作为我国自主GNSS信号体制设计和优化的一种可行的参考方案。更多还原

【Abstract】 Selection of the interoperable signal modulation in the working of global navigation satellite system(GNSS) signals design has some particularity.Interoperable signal has huge amount of users and very wide application fields.And for different application requirements,the expectations for performance and complexity are difference. A competitive interoperable signal design recommends the evaluation of signal performances under multiple typical receiving modes.In this paper presents a kind of signal performance evaluation method for generic mismatch processing mode is presented.On this basis,four reference modulations for Compass B1 band interoperable signal are proposed, and within which,an optimal reference modulation is given based upon the comprehensive performance.Compared with existing interoperable signals,the proposal has independent intellectual property right.And it has superiorities in demodulation and tracking,as well as in the flexibility.The study results can be regarded as a feasible reference for the design and optimization of the Compass signals.更多还原