航天返回与遥感
航天返迴與遙感
항천반회여요감
SPACECRAFT RECOVERY & REMOTE SENSING
2013年
4期
43-51
,共9页
时间延迟积分图像传感器%速高比补偿%同轨立体成像%高分辨%空间相机
時間延遲積分圖像傳感器%速高比補償%同軌立體成像%高分辨%空間相機
시간연지적분도상전감기%속고비보상%동궤입체성상%고분변%공간상궤
time-delayed-integration charged coupled deviced%velocity/height rate compensation%same orbit stereo-imaging%high resolution%space camera%Chinese lunar exploration project
文章介绍了中国两次绕月探测中 CCD 立体相机所采用的技术与创新，并与国际同类相机所获取的图像进行了比较；在此基础上详细介绍了“嫦娥二号”(CE-2)卫星CCD立体相机的综合创新集成技术--“单镜头两视角同轨立体成像、时间延迟积分图像传感器（TDICCD）推扫、速高比补偿”，并从工程目标与科学目标出发进行探测灵敏度及成像动态范围的需求分析；根据需求分析确定了总体技术方案，包括光、机、电的优化设计以及对月探测中首次采用TDICCD的技术困难与对策；特别讨论了速高比补偿的方案及实施途径，并进行了在轨试验验证。文章最后分别给出了虹湾地区成像分辨率为1.3m以及全月面分辨率为7m 的代表性图像，图像清晰、层次丰富，显示出中国在对月立体成像技术上取得了显著进步。
文章介紹瞭中國兩次繞月探測中 CCD 立體相機所採用的技術與創新，併與國際同類相機所穫取的圖像進行瞭比較；在此基礎上詳細介紹瞭“嫦娥二號”(CE-2)衛星CCD立體相機的綜閤創新集成技術--“單鏡頭兩視角同軌立體成像、時間延遲積分圖像傳感器（TDICCD）推掃、速高比補償”，併從工程目標與科學目標齣髮進行探測靈敏度及成像動態範圍的需求分析；根據需求分析確定瞭總體技術方案，包括光、機、電的優化設計以及對月探測中首次採用TDICCD的技術睏難與對策；特彆討論瞭速高比補償的方案及實施途徑，併進行瞭在軌試驗驗證。文章最後分彆給齣瞭虹灣地區成像分辨率為1.3m以及全月麵分辨率為7m 的代錶性圖像，圖像清晰、層次豐富，顯示齣中國在對月立體成像技術上取得瞭顯著進步。
문장개소료중국량차요월탐측중 CCD 입체상궤소채용적기술여창신，병여국제동류상궤소획취적도상진행료비교；재차기출상상세개소료“항아이호”(CE-2)위성CCD입체상궤적종합창신집성기술--“단경두량시각동궤입체성상、시간연지적분도상전감기（TDICCD）추소、속고비보상”，병종공정목표여과학목표출발진행탐측령민도급성상동태범위적수구분석；근거수구분석학정료총체기술방안，포괄광、궤、전적우화설계이급대월탐측중수차채용TDICCD적기술곤난여대책；특별토론료속고비보상적방안급실시도경，병진행료재궤시험험증。문장최후분별급출료홍만지구성상분변솔위1.3m이급전월면분변솔위7m 적대표성도상，도상청석、층차봉부，현시출중국재대월입체성상기술상취득료현저진보。
The paper describes the CCD-stereo camera’s novel techniques used in China’s two around-lunar reconnaissances and compares similar images of lunar terrain obtained by foreign cameras. The paper also details CCD stereo-camera’s overall scheme, i.e. synthetically integrating techniques of“same orbit stereo-imaging with two sight angles, TDICCD pushing scan and velocity/height ratio compensation”. It in-cludes the requirement analysis of the sensibility and imaging dynamical range for the sake of engineering and science goals. The overall scheme is established on the basis of the requirement analysis, including the opti-mizing designs with optics, machine and electronics and imaging capability analysis for this scheme. The scheme can fulfill the mission goals. The paper introduces the technical difficulties with time-delay-integration CCD for lunar high resolution stereo-imaging and the countermeasures employed, especially discusses the scheme and way for velocity/height ratio compensation and gives the executed validation on orbit. Finally, it shows several clear images of Iridum area with resolution of 1.3m and of global lunar images with resolution of 7m. The results indicate that these techniques employed are effective, and China has reached international ad-vanced level:the global lunar images with 7m GSD are of the highest resolution in the world and represents the obviously progress in the stereo-camera techniques for lunar reconnaissance.
