基于LabVIEW的特殊复杂信号源研究与设计

Research and Design of Special Complex Signal Source Based on LabVIEW

摘要:

围绕导航通信系统的抗干扰测试需求以及对现役无线电导航系统的性能评估任务,研究并设计了一种复杂环境下的信号源并给出了数学模型;该信号源设计要求能够产生包括理想、多径、干扰以及信道噪声在内的、具有天线效应的实际复杂信号;在多径延时的设置上,给出了一种精度更高,延时任意的信号生成方法;最后以PXIe-5672为硬件测试平台,由计算机软件LabVIEW产生波形数据,并通过控制仪器驱动实现信号的存储和发生,完成了整个信号源的设计;仿真结果表明了该设计方案可行有效。

Abstract:

Around the anti-jamming test requirements of the navigation and communication system and the task of evaluating the performance of radio navigation system, the paper researched and designed a complex signal source as well as the signal mathematical model. It can produce including ideal, multipath, interference and channel noise, and with the antenna effect actual complex signal. On the issue of multipath time delay, a way of arbitratry time delay was given, which has much higher accuracy. Finally on the hardware platform of PXIe-5672, with the waveform data produced by LabVIEW, the design of entire signal source is finished, which is realized by controling instrument driver to store and produce signal. Simulation results show the feasibility and efficiency of this plan. 