MONITORING SYSTEM, SATELLITE INFORMATION TRANSMISSION SYSTEM, MONITORING SATELLITE, COMMUNICATION SATELLITE, FLYING OBJECT RESPONSE SYSTEM, DATA RELAY SATELLITE, EQUATORIAL SATELLITE GROUP, POLAR ORBIT SATELLITE GROUP, AND INCLINED ORBIT SATELLITE GROUP

摘要

In this invention, a second monitoring device comprises a +X+Y sensor (11S) directed to +45 degrees, a +X-Y sensor (12S) directed to -45 degrees, a -X+Y sensor (13S) directed to +135 degrees, and a -X-Y sensor (14S) directed to -135 degrees. When the second monitoring device flies toward the northeast direction, the second monitoring device uses the +X-Y sensor (12S) to monitor sky over the northern hemisphere at high latitudes and uses the -X+Y sensor (13S) to monitor sky over the southern hemisphere at high latitudes. Moreover, when the second monitoring device flies toward the southeast direction, the second monitoring device uses the -X-Y sensor (14S) to monitor the sky over the northern hemisphere at the high latitudes and uses the +X+Y sensor to monitor the sky over the southern hemisphere at the high latitudes.