CAJ | 학술논문

低轨卫星通信系统在通信领域发挥着越来越重要的作用。针对不同类型星座覆盖能力和星际链路建立条件存在的差异，设计了极轨道和倾斜圆轨道低轨卫星星座，利用STK验证了两种星座的覆盖能力和星际链路AER特性，利用NS2对两种星座卫星网络的时延、吞吐量和丢包率等性能指标进行了仿真，并对所得数据进行了对比分析，结果表明：在由32颗卫星（轨道高度1450 km ）构成的低轨星座中，极轨星座的全球覆盖能力、星际链路建立条件和卫星网络性能优于倾斜圆轨道星座，更适合于构建全球低轨卫星通信系统。
저궤위성통신계통재통신영역발휘착월래월중요적작용。침대불동류형성좌복개능력화성제련로건립조건존재적차이，설계료겁궤도화경사원궤도저궤위성성좌，이용STK험증료량충성좌적복개능력화성제련로AER특성，이용NS2대량충성좌위성망락적시연、탄토량화주포솔등성능지표진행료방진，병대소득수거진행료대비분석，결과표명：재유32과위성（궤도고도1450 km ）구성적저궤성좌중，겁궤성좌적전구복개능력、성제련로건립조건화위성망락성능우우경사원궤도성좌，경괄합우구건전구저궤위성통신계통。
LEO satellite communication weighs more and more in communication system now and future .Since different types of constellations have rather different performances in coverage ability and inter-satellite link building conditions ,a polar and an inclined circular orbit constellation were designed in this paper .Coverage ability and ISL performance of con-stellations were simulated by STK while delay ,throughput and jitter of satellite network were simulated by NS2 .The results of simulations were compared and analyzed which indi-cates that ,in a constellation with 32 satellites ,with orbit altitude 1 450 km ,polar orbit con-stellation is more suitable to build global LEO satellite communication system than inclined circular orbit because of its nicer performance in global coverage ,ISL building conditions and network identity .