基于PXI总线的小卫星扩频应答机模拟器的设计与实现

Design and Implementation of Small Satellite Spread Transponder Simulator Based on PXI

摘要:

应用PXI总线、扩频通信、软件无线电等技术,设计并开发了一种小卫星扩频应答机模拟器,可作为真实应答机的替代产品参与卫星初样产品桌面联试、与地面站对接等试验.同时基于PXI总线的灵活架构以及模块化设计思路,可实现快速升级,为新算法提供通用验证平台。采用成熟的地面测试设备以及星上产品与该系统进行联试,验证了该应答机模拟器调制、解调等信号处理功能的正确性和有效性。

Abstract:

A small satellite spread transponder simulator,which is capable to replace the true transponder to join the subsystem test or check the compatibility of ground station TT C (Telemetry Tracking Command) SCOE (Specific Check Out Equipment), has been developed．Technologies such as PXI bus, spread communication, software radio have been applied in the development process．It will be fast to update this simulator or convenient to provide a common platform for the new algorithm based on flexible architecture of PXI and modularization design. The modulation and demodulation function has been verified by communicating with the on-board equipment and ground test equipment.