用于灾后遥感的共位衍射卫星隔离方法  

The isolation of co-located diffraction satellite for remote sensing after disaster

作　　者：孙昕竹 陈卫东[1] 周必磊[2] 朱维各[2] 谢亚恩 吴畏 SUN Xinzhu;CHEN Weidong;ZHOU Bilei;ZHU Weige;XIE Yaen;WU Wei(College of Aerospace and Civil Engineering,Harbin Engineering University,Harbin 150001,China;Shanghai Institute of Satellite Engineering,Shanghai 200240,China)

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,黑龙江哈尔滨150001 [2]上海卫星工程研究所,上海200240

出　　处：《地震工程与工程振动》2019年第6期18-26,共9页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金面上项目(11772185);民航项目(D020214)~~

摘　　要：针对地震发生后对受灾地区高精度地图的获取需求,考虑到静止轨道轨位的紧张性,研究了一种基于共位衍射的卫星成像系统。该系统由两颗共位卫星构成,一颗为成像卫星,另一颗为薄膜衍射卫星,相比于传统的单颗成像卫星,该系统具有响应迅速以及空间分辨率高的优势。本文基于共位策略和隔离策略相结合的设计原则,采用倾角/偏心率协调隔离的方法,设计了一组轨位在10.6E定点经度内的共位衍射成像系统轨道根数。通过仿真分析,将各个共位卫星之间相对距离与实际在轨卫星的相对距离做对比,仿真结果与实际数据间的误差满足一定的设计要求。因此,该组轨道根数在实际在轨应用中具备一定可行性,本文设计的共位衍射卫星系统为灾后应急响应提供重要参考。Aiming at the need of high precision map acquisition of the disaster area after earthquake and consider­ing the tense of the geostationary orbit, animaging system based on the co-location diffraction is studied. The systemconsists of two co-location satellites, one is an imaging satellite and the other is a thin-film diffraction satellite. Compared with the traditional single imaging satellite the new system has the advantages of quick response and spa­tial resolution. Based on the design principle which are combined of the co-location strategy and the isolation strate­gy ,a group of orbital dements of the co-location diffraction imaging system within the fixed point longitude of 10.6E were designed by using the Inclination/eccentricity coordination isolation method. In the end,the relative dis­tance between the two co-location satellites are simulated. Compared the simulation result with the actual data of on-orbit system, the error can satisfy the design request. In summary, the designed orbital elements have the feasi­bility in actual application,and the co-location diffraction satellites system can provide reference for fast responseafter earthquake.

关 键 词：地震 共位 静止轨道 衍射成像 隔离 

分 类 号：V448.21[航空宇航科学与技术—飞行器设计]