ROUTING ALGORITHM FOR THE ROTATION-EXCHANGE NETWORK

The paper proposes a new routing algorithm for the Rotation-Exchange (REn) network. The length of the path between any two nodes given by the algorithm is not more than (3/8)n2 + O(n), that is, the diameter of REn is not more than (3/8)n2 + O(n). This improves on a (1/2)n2 + O(n) routing algorithm proposed earlier.

用于太阳矢量确定的太阳电池片在轨性能分析

太阳电池片可用作粗太阳敏感器(粗太敏),多个等规格粗太敏相互配合可实现太阳矢量的全天域获取;粗太敏的在轨性能决定了其获得太阳矢量的精度。本文基于TZ-1(天智一号)卫星长时间跨度的大量在轨数据,以差分式太阳敏感器确定的太阳矢量为基准,分析粗太敏所确定太阳矢量的角度偏差;对粗太敏输出进行反演,分析其安装偏差及性能衰减情况;并综合多片粗太敏输出,对三结砷化镓太阳电池片对应的凯利余弦曲线进行拟合。分析结果表明,粗太敏安装偏差较小,其所确定的太阳矢量偏差小于5°,性能衰减速率约为0.0621 V/a,可实现一定精度范围内太阳矢量的全天域获取。