Conceptual rotational mode design for optical conical scanning imaging small satellites

查看全文 作　　者：WANG [1]Feng;XI [1]RuiChen;YUE [2]ChengFei;LI [1]HuaYi;CAO [1]XiBin

机构地区：[1]Research Center of the Satellite Technology,Harbin Institute of Technology,Harbin 150001,China;[2]Institute of Space Science and Applied Technology,Harbin Institue of Technology,Shenzhen 518055,China

出　　处：《Science China(Technological Sciences)》索引2020年第63卷第8期,共13页

基　　金：supported by the National Natural Science Foundation of China(Grant No.11972130)。 摘　　要：This paper focuses upon the novel optical conical scanning imaging working mode design for small satellites.This kind of satellite employs only one inclined optical camera achieving wide-swath imaging via a rotational motion about the nadir axis either by the camera or by the satellite.Three working modes are designed,i.e.,high-speed rotational mode,low-speed rotational mode,and variable-speed rotational mode.For the high-speed and low-speed working modes,the camera rotates at a constant speed and the corresponding angular velocity is derived under the consideration of guaranteed coverage and minimized overlap.To improve the system performance,an enhanced working mode taking advantages of both the high-speed rotational mode and lowspeed rotational mode is proposed.Working in this variable-speed rotational mode,the camera rotates slowly to get high-quality pictures when it works,while it rotates rapidly to reduce the energy consumption and save the storage during which period the camera is turned off to minimize the overlap.All these working modes are illustrated in detail,and numerical simulation tests are conducted to validate their effectiveness. 关键词：remote sensing optical imaging wide-swath imaging conical scanning small satellite

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Conceptual rotational mode design for optical conical scanning imaging small satellites

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