To observe a space object under a suitable condition in an observation satellite.SOLUTION: An observation satellite observes an artificial satellite or a space object such as a debris of flying in the vicinity of a stationary orbit by surrounding around the earth. The observation satellite has an observation device and a propulsion device, and descends an orbital altitude of the observation satellite by controlling the propulsion device so as to decelerate the observation satellite. The observation satellite operates the observation device in the sky on the back side of the earth on the side not exposed to sunlight from local sun time (LST) 18:00 to next morning LST 06:00 while the observation satellite is moving to the east to the space object by increasing a surrounding speed of the observation satellite to a rotation speed of the earth according to descends of the orbit altitude.SELECTED DRAWING: Figure 51

    【課題】観測衛星において好適な条件で宇宙物体を観測することを目的とする。【解決手段】観測衛星は、地球を周回して静止軌道近傍を飛翔する人工衛星、あるいは、デブリといった宇宙物体を観測する。観測衛星は、観測装置と推進装置を具備し、観測衛星が減速するように推進装置を制御することによって、観測衛星の軌道高度を下降させる。観測衛星は、軌道高度の下降に伴って地球の自転速度に対する観測衛星の周回速度が上がることによって、観測衛星が宇宙物体に対して東方へ移動しながら、LST18:00以降翌朝LST06:00までの間に太陽光が当たらない側である地球の裏側の上空で前記観測装置を動作させる。【選択図】図51


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    Title :

    OBSERVATION SATELLITE


    Additional title:

    観測衛星


    Contributors:

    Publication date :

    2024-12-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B64G Raumfahrt , COSMONAUTICS




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