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A Method of Small Satellite Constellation Remote Sensing System Model Based on UAV Assisted Coverage

A satellite constellation and system model technology, applied in the field of remote sensing of satellites and UAVs, can solve the problems of the reduction of sensor monitoring range, the delayed transmission of remote sensing information, and the large time interval of information transmission, so as to overcome the limited range of remote sensing and overcome the problems of remote sensing. Gap problem, the effect of improving remote sensing resolution

Active Publication Date: 2019-07-12
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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AI Technical Summary

Problems solved by technology

[0006] 3. Defects of Satellite Remote Sensing Technology
[0008] 1) high cost
If small satellites can realize real-time observation of hotspots, that is, zero revisit period, many satellites will be needed, and the license cost and launch cost are relatively high, which will be a serious waste of resources.
[0009] 2) poor timeliness
The development cycle, launch cycle, and revisit cycle are all relatively long. In addition, the information transmission time interval will cause a lot of delayed transmission of remote sensing information.
[0010] 3) Poor mobility
In the event of emergencies or serious disasters (such as large-scale forest fires), when real-time monitoring of hotspot areas is required, small satellites cannot complete the dispatch in time, and cannot achieve real-time monitoring
[0011] 4) Limited by the influence of deep space environment
[0012] 5) Waste of track resources
Orbital resources are scarce. With the increasing demand of people, the number of launched satellites has increased sharply, resulting in a serious shortage of orbital resources.
[0013] 6) There are gaps in remote sensing
[0014] 4. Insufficiency of UAV remote sensing
Due to the influence of flight altitude, the monitoring range of the on-board sensors is greatly reduced for satellites
[0017] 2) Limited functionality
Sensitive areas cannot be found, and due to limited payload capacity, only simple image capture tasks can be completed

Method used

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Embodiment Construction

[0045]The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] The cooperation mechanism between drones and small satellites such as figure 1 As shown, the constellation members will have different trajectories when passing through the target area, and there is a certain time interval. Judging from the coverage at t1 and t2, satellite 1 passes through the target area before satellite 2 arrives, but cannot fully cover the target area. At this time, we can use drones to assist remote sensing. Before the arrival of time t3, we need to use the drone to complete the remote sensing of the uncovered area.

[0047] The algorithm flow of the cooperation between small satellites and drones is as follows:

[0048] The first step: According to the constellation parameters (including the number of satellites n s and the number of tracks and track parameters V(a, θ, e, ω, Ω, f), and the coordinate set C(((λ 1 , ...

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Abstract

The invention relates to the technical field of satellite and unmanned aerial vehicle remote sensing, in particular to a small satellite constellation remote sensing system model based on unmanned aerial vehicle assisted coverage. Based on an unmanned aerial vehicle and small satellite cooperation mechanism, an unmanned aerial vehicle and small satellite cooperation constraint model is provided, and the unmanned aerial vehicle and small satellite cooperation mechanism is analyzed under the constraint model. A coverage performance analysis algorithm is provided, and the coverage performances under different constellations are compared and analyzed. The small satellite constellation remote sensing system model improves the coverage performance of independent remote sensing, overcomes the shortcoming of small satellite remote sensing gaps, can improve the remote sensing resolution, and meanwhile, can lower the remote sensing cost. In addition, small satellite and unmanned aerial vehicle cooperation also solves the problem of limited remote sensing range of an unmanned aerial vehicle.

Description

technical field [0001] The invention relates to the technical field of remote sensing of satellites and unmanned aerial vehicles, in particular to a method for a small satellite constellation remote sensing system model based on the auxiliary coverage of unmanned aerial vehicles. Background technique [0002] 1. Satellite remote sensing technology [0003] The combination of space technology and photoelectric detection technology gave birth to modern aerospace remote sensing technology. Since the beginning of the space age, space remote sensing technology, which uses various sensors carried by spacecraft to observe the earth to obtain all-round and all-weather geospatial information, has become one of the focuses of competition and development in the world. Because the satellite remote sensing observation platform has the characteristics of long operation time, stable flight, large amount of information obtained, and the ability to periodically repeat the earth observation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 杨志华苏敏刘振涛金豪杰
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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