【作者】 闫建峰；

【导师】 郭黎利；

【作者基本信息】 哈尔滨工程大学 ， 通信与信息系统， 2006， 硕士

【摘要】 在一些特殊的场合需要同时进行扩频通信和对待测物体进行定位，这就要求设计一种能够同时满足系统要求的通信速率、测距量程和测距精度的复合式无线通信系统。我们把这种无线通信系统称为复合系统，即利用一套无线通信设备同时完成通信和定位的任务。传统的复合系统就是利用直接序列扩频系统的距离分辨率及测距能力，同时完成扩频通信和测距任务。 本文对传统的复合系统结构进行了改进，调和了传统结构的复合系统技术参数(包括测距量程、测距精度、测距实时性和通信效率等)对扩频序列的周期的矛盾需求，重点分析了通信测距复合系统对复合码的要求。构建了复合系统的3种工作模式，即基于m_W序列的复合系统、基于完备互补序列的复合系统和基于修正互补序列的复合系统。重点对两种基于互补序列的复合系统抑制干扰和噪声的性能进行了分析，进而论证基于修正互补序列的复合系统在抑制干扰，尤其是多径干扰方面的技术优势。 在复合系统硬件平台实现方面，对复合系统的硬件实现方案进行了讨论和设计，结合复合系统功能的多样性和具体应用场合的复杂性，提出了以多DSP为核心的软件无线电模式作为复合系统的硬件实现模式，并且设计了基于交换网络结构的新型复合系统接收机多DSP平台。为该技术的进一步推广应用奠定了坚实的基础。更多还原

【Abstract】 In some special occasions, we need to accomplish the spread spectrum communication and orientation simultaneously. In view of this, a multiplex radio communication system should be designed to realize such desired system requirements as the efficiency of communication, the range of telemeter and the precision of telemeter. The multiplex system is a kind of system which integrates the communication and orientation tasks in a single system. We can name it the complex system, too. The traditional complex system has the function of communication and telemetry simultaneously because the DS/SS has the ability of strong discrimination and ranging.In this paper, the structure of complex system is ameliorated so that the inconsistent of technique parameters has been conciliated in traditional complex system. These parameters include the range of telemeter, the precision of telemeter, the real time ability and the efficiency of communication. The emphasis has been put on the analysis of the concatenated series. We introduce three kinds of multiplex system models, that is the multiplex system based on the m_W sequence, the multiplex system based on the complete complementary series and the multiplex system based on the modified complete complementary series. The anti-interference performance of the two multiplex systems based on the complementary series has been analyzed and compared in detail. The results shows that the multiplex system based on the modified complete complementary series has a lot of technique advantages in the anti-interference performance, especially in the anti-multipath interference aspect.In the aspect of hardware platform of the complex system, we have discussed and designed several projects. Combining the diversity of the function of the complex system and the complexity of application situation, we have put forward a relatively universal Software Defined Radio platform whose kernel is multi-DSPs, meanwhile, a kind of multi-DSPs receiver platform which is of更多还原