高动态卫星信号模拟器的软件实现与仿真

Implementation of software and simulation for high-dynamic satellite simulator

在高动态GPS信号模拟器的使用中,需要根据用户的要求,设计出各种动态环境下接收机所接收到的GPS卫星信号的运动轨迹,为接收机的调试和测试提供真实环境下的数字信号源。由于需要经常修改和灵活设置各种参数,设计一个模拟器用户界面就显得十分必要。GPS卫星信号模拟器系统从整体上来说分为硬件平台和上位机软件两大部分,二者之间通过串口进行连接和通信。文中利用Visual C++实现了高动态GPS信号模拟器的上位机软件部分,把设计的界面主要模块的功能及设计实例,通过与Jubiter高动态接收机联调,用Matlab软件对自研模拟器和思博伦模拟器测试后的数据进行仿真,结果表明验证了软件设计的正确性和可行性。

Using the high dynamic GPS （Global Positioning System） signal simulator,it needs to design the tracks of the GPS satellite signals in various dynamic environments according to the user＇s requirement, which provide the signal source to the receiver for debugging and testing. It＇s very important to design a simulator interface due to the parameter is changed frequently. The whole GPS signal simulator is composed of two units ： the hardware platform and the upper computer software system, which are connected and communicate mutually through serial port. This paper analyzes deeply realizes the upper computer software syslem of the high dynamic GPS signal simulator, on using Visual C＋＋ and introduces all the modules function and the design examples of interface, through joint-debugging with Jubiter high dynamic receiver and Matlab software simulateing the data on the basit of the test result of the setf-devel oped simulator and Spirent simulator. The simulation resucts lenty the fesibility of the softwore deing.