JP-7855041-B2 - Satellite monitoring system and satellite information transmission system

JP7855041B2JP 7855041 B2JP7855041 B2JP 7855041B2JP-7855041-B2

Inventors

迎久幸

Assignees

三菱電機株式会社

Dates

Publication Date: 20260507
Application Date: 20240910
Priority Date: 20200928

Claims (2)

Critical infrastructure, which is social infrastructure in outer space, is composed of a constellation of infrastructure satellites that fly in Earth orbit (LEO: Low Earth Orbit) at an altitude of 500 km to 2000 km, A constellation of monitoring satellites consisting of monitoring satellites that fly in orbits at an altitude of 2000 km or less to monitor the aforementioned infrastructure satellite constellation and perform on-orbit services, Ground equipment installed on the ground and used to exchange information with each of the infrastructure satellites in the aforementioned infrastructure satellite constellation, A satellite monitoring system comprising a monitoring center installed on the ground and which performs information exchange with the monitoring satellite, The aforementioned infrastructure satellite constellation includes a constellation of communication satellites, The aforementioned group of communications satellites is They fly in evenly spaced orbits with orbital altitudes and inclinations that result in sun-synchronous orbits that complete an integer number of orbits per day. In the aforementioned satellite monitoring system, the monitoring satellite and the monitoring center exchange information via the communication satellite constellation. The aforementioned communications satellite, A first communication device that communicates with the aforementioned ground equipment, Three second communication devices for communication between satellites and It is equipped with, The aforementioned group of communications satellites is A first satellite that communicates with the aforementioned ground equipment, A second satellite that communicates with the aforementioned monitoring satellite, It includes a third satellite that only communicates with satellites flying in front of and behind it, A satellite monitoring system that uses the communication satellite as the first satellite, the second satellite, and the third satellite, to communicate with satellites flying in front of and behind it in the same orbital plane, and simultaneously communicates with the ground facilities and the monitoring satellite .
Critical infrastructure, which is social infrastructure in outer space, is composed of a constellation of infrastructure satellites that fly in Earth orbit (LEO: Low Earth Orbit) at an altitude of 500 km to 2000 km, A satellite information transmission system comprising ground equipment installed on the ground and performing information exchange with each of the infrastructure satellites in the aforementioned infrastructure satellite constellation, The infrastructure satellite constellation consists of a communications satellite constellation comprising communications satellites and a user satellite constellation comprising user satellites that utilize the communications satellite constellation as a communication line. The aforementioned group of communications satellites is They fly in evenly spaced orbits with orbital altitudes and inclinations that result in sun-synchronous orbits that complete an integer number of orbits per day. In the aforementioned satellite information transmission system, the user satellite and the ground equipment exchange information via the communication satellite constellation. The aforementioned communications satellite, A first communication device that communicates with the aforementioned ground equipment, Three second communication devices for communication between satellites and It is equipped with, The aforementioned group of communications satellites is A first satellite that communicates with the aforementioned ground equipment, A second satellite that communicates with the aforementioned user satellite, It includes a third satellite that only communicates with satellites flying in front of and behind it, A satellite information transmission system that uses the communication satellites as the first, second, and third satellites, respectively, to communicate with satellites flying in the same orbital plane, both in front of and behind the first satellite, and simultaneously communicates with the ground facilities and the user satellite .

Description

This disclosure relates to ground facilities, communications satellites, component satellites, artificial satellites, communications satellite constellations, satellite constellations, and satellites. Satellite-based social infrastructure, such as information exchange with distant or remote regions via communication satellites, weather forecasting using images from the Himawari weather satellite, and the utilization of geospatial information from quasi-zenith positioning satellites, has become firmly established in daily life. These practical satellite constellations have become critical infrastructure indispensable to society. On the other hand, factors such as debris collisions due to the increasing number of objects in the space environment are leading to an increase in hazardous events that carry the risk of failure or loss of critical infrastructure. Therefore, a system is needed to monitor critical infrastructure and take mitigation actions if necessary. Patent Document 1 discloses a method for observing space debris in a space where sunlight is backlit. Japanese Patent Publication No. 2011-218834 A diagram showing an example of the overall configuration of the satellite monitoring system according to Embodiment 1.A diagram showing an example configuration of a monitoring center according to Embodiment 1.A diagram showing an example of the configuration of a satellite, which is an example of a space object according to Embodiment 1.A diagram showing an example configuration of a communications satellite according to Embodiment 1.A diagram showing an example configuration of an observation satellite according to Embodiment 1.A diagram showing another example of the configuration of the observation satellite according to Embodiment 1.A diagram showing an example configuration of a satellite monitoring system according to Embodiment 1.This figure shows an example configuration 3 of a communications satellite constellation according to Embodiment 1.This figure shows an example configuration 4 of a communications satellite constellation according to Embodiment 1.A diagram showing the communication method of the communication satellite constellation according to Embodiment 1.A diagram showing an example configuration of a satellite information transmission system according to Embodiment 2.A diagram showing an example of the overall configuration of a satellite information transmission system according to Embodiment 2.A diagram showing the communication method of the communication satellite constellation according to Embodiment 2.A diagram illustrating the ground equipment according to Embodiment 3.This figure shows an example of a communications satellite according to Embodiment 3.A diagram showing an example of a satellite information transmission system according to Embodiment 3.This figure shows an example of a communication satellite according to Embodiment 3.A diagram showing an example configuration of the monitoring system according to Embodiment 4.A diagram showing an example configuration of Example 1 of the first satellite constellation according to Embodiment 4.A diagram showing an example configuration of Example 2 of the first satellite constellation according to Embodiment 4.A diagram showing an example configuration of Example 4 of the second satellite constellation according to Embodiment 4.A diagram showing example 1 of the communication method for a satellite information transmission system according to Embodiment 5.A diagram showing an example of the overall configuration of a satellite information transmission system according to Embodiment 5.This figure shows an example 6 of the communication method for a satellite information transmission system according to Embodiment 5.A diagram showing an example configuration of an artificial satellite according to Embodiment 6.A diagram showing an example configuration of a communications satellite constellation according to Embodiment 6.A diagram showing an example configuration of a satellite constellation according to Embodiment 6.A diagram showing another example of the configuration of the satellite constellation according to Embodiment 6.A diagram showing an example configuration of Example 1 of the satellite information transmission system according to Embodiment 6.A diagram showing an example configuration of Example 2 of the satellite information transmission system according to Embodiment 6.A diagram showing an example configuration of Example 3 of the satellite information transmission system according to Embodiment 6.A diagram showing an example configuration of Example 4 of the satellite information transmission system according to Embodiment 6.A diagram showing an example configuration of Example 5 of the satellite information transmission system according to Embodiment 6. The embodiments of this disclosure will be described below with reference to the drawings. In each drawing, identical or corresponding parts are denoted by the sam