MARS EXPLORATION ROVERS EMC SYSTEMTEST PROGRAM OVERVIEW

摘要

NASA’s Mars Exploration Rover (MER) project consisted of two rovers/spacecraftlaunched on two separate launch vehicles in 2003 and landed on the surface of Mars inJanuary of 2004. As part of the environmental assurance program, the flight systemunderwent a suit of dynamics, thermal, and electromagnetic (EMC) tests. The EMCtesting included radiated emission, radiated susceptibility, conducted emission, conductedsusceptibility, grounding and isolation tests at the assembly/subsystem and system-levels.The most important EMC test performed was the Rover self-compatibility test to ensurethe operation of one subsystem or instrument did not interfere with the performance ofanother.This paper summarizes all the EMC tests and analyses that have been performed on thehardware at different levels of integration and configurations. Due to schedule and costconstraints, the number of tests performed was minimized, while optimizing the overalltest effectiveness. The process for determining the necessary tests and the test results willbe presented. The test anomalies that were encountered during the testing and theircorrective actions will be described. A number of lessons have been learned from thesetests that would be helpful for future projects. A selection of lessons will be discussed inthe paper.