某星载高光谱大气探测仪采用1553B作为外部总线以及RS422作为内部总线,针对此类卫星载荷的多总线测试要求,设计了一种用于地面试验的多总线测试平台。该平台通过将1553B端口与RS422端口同时接入卫星载荷,配置两种总线的相关终端特性,开发人机交互平台进行内外部指令的注入与监视,实现了对卫星载荷的完整监控、通讯测试、故障检测和数据记录。通过实验证明该系统能够更高效、全面地对具备多总线的卫星载荷进行地面测试,并完善相关测试方法,提高了针对卫星载荷的地面测试能力。

On the basis of analyzing the test requirement of a certain space borne hyperspectral atmospheric sounder, a ground test platform about such multi-bus system is designed. The spaceborn ehype rspectral atmospheric sounder consists of 1553B as external bus and RS422 as internal bus.Both of the 1553B and RS422 are connected into satellite payload. And different kinds ofterminal characteristics (bus control, remote terminal, bus moniter) are applied to the test platform. It implements the functions about data monitoring, function test, fault detection and record by developing the PC platform. The experimental results show that the platform can effectively and comprehensively test for the multiple-bus system, and ensure the reliability and stability of the multiple bus system works.