To provide a monitoring system that can constantly monitor the entire globe with a small number of satellites and has high monitoring performance such as spatial resolution and monitoring performance.SOLUTION: A communication satellite 201 includes: a first optical communication device 51C that performs optical communication with a satellite in front when passing above the equator northward; a second optical communication device 52C that performs optical communication with a satellite behind; a third optical communication device 53C that performs optical communication with a satellite flying northeast of an adjacent orbit on an east side; a fourth optical communication device 54C that performs optical communication with a satellite flying southwest of an adjacent orbit on a west side; and a communication device 55C that is directed in -Z direction and communicates with the monitoring satellite 100. An azimuth communication field of view of the third optical communication device 53C is ±90 degrees or more with respect to -X direction. An azimuth communication field of view of the fourth optical communication device 54C is ±90 degrees or more with respect to -X direction. A communication field of view of the communication device 55C with respect to the monitoring satellite 100 is ±60 degrees or more around the +X axis and ±60 degrees or more around the +Y axis with respect to -Z direction.SELECTED DRAWING: Figure 13

    【課題】少ない衛星数で全球常時監視が可能であり、空間分解能及び監視性能のような監視性能の高い監視システムを提供する。【解決手段】通信衛星201は、赤道上空北方通過の際、前方衛星と光通信する第一の光通信装置51Cと、後方衛星と光通信する第二の光通信装置52Cと、東側隣接軌道の北東を飛翔する衛星と光通信する第三の光通信装置53Cと、西側隣接軌道の南西を飛翔する衛星と光通信する第四の光通信装置54Cと、-Z方向に指向し監視衛星100と通信する通信装置55Cとを有する。第三の光通信装置53CのAzimuth通信視野は、+X軸の方向に対して±90度以上である。第四の光通信装置54CのAzimuth通信視野は、-X方向に対して±90度以上である。通信装置55Cの監視衛星100との通信視野が、-Z方向に対して+X軸のまわりに±60度以上、+Y軸のまわりに±60度以上である。【選択図】図13


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    Title :

    DATA RELAY SATELLITE


    Additional title:

    データ中継衛星


    Contributors:

    Publication date :

    2024-04-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04B TRANSMISSION , Übertragung / B64G Raumfahrt , COSMONAUTICS



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