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Remote sensing system based on satellite formation

A satellite formation and remote sensing technology, applied in the field of remote sensing, can solve the problems of inconsistency, not taking into account the antenna angle, and the beam not covering the same area, and achieve the effect of improving accuracy and time window synchronization.

Active Publication Date: 2019-11-22
SPACETY CO LTD (CHANGSHA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent only considers time synchronization, but does not take into account the interference phase error caused by the frequency drift of the receiving device on the satellite platform, nor does it take into account the problem that the antenna angle is inconsistent, resulting in the beam not covering the same area

Method used

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  • Remote sensing system based on satellite formation
  • Remote sensing system based on satellite formation
  • Remote sensing system based on satellite formation

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Experimental program
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Embodiment 1

[0040] This embodiment also discloses a remote sensing imaging method, which may also be a satellite-based remote sensing imaging method, may also be a distributed synthetic aperture radar based remote sensing imaging method, or may be a satellite formation-based remote sensing imaging method method, which can be implemented by the system of the present invention and / or other alternative components. For example, a system that implements the method by using various components in the system of the present invention. In the case of no conflict or contradiction, the whole and / or part of the content of the preferred implementations of other embodiments may serve as supplements to this embodiment.

[0041] According to a preferred embodiment, the imaging method includes the main satellite 100 , the first auxiliary satellite 200 and the second auxiliary satellite 201 with the imaging sensing device 300 and the synchronization device 400 as payloads. The first auxiliary star 200 and ...

Embodiment 2

[0049] This embodiment may be a further improvement and / or supplement to Embodiment 1, and repeated content will not be repeated here. In the case of no conflict or contradiction, the whole and / or part of the content of the preferred implementations of other embodiments may serve as supplements to this embodiment.

[0050] According to a preferred embodiment, a third auxiliary star 101 with the imaging sensor device 300 and the synchronization device 400 as payloads is set outside the trajectory of the first auxiliary star 200 and the second auxiliary star 201 and flies in formation with the main star 100 . The third auxiliary star 101 is located in an adjacent orbit to the main star 100 , so that the third auxiliary star 101 forms a long-along track baseline C and a short-cut track baseline D relative to the main star 100 . The imaging sensing device 300 is based on the first spatial baseline A and the second spatial baseline B, combined with the short-cut track baseline D a...

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Abstract

The invention relates to a remote sensing system based on satellite formation. The system comprises a main satellite taking an imaging sensing device and a synchronizing device as effective loads, a first auxiliary satellite and a second auxiliary satellite, wherein the first auxiliary satellite and the second auxiliary satellite fly around the main satellite, the main satellite is located on thelong axis of motion trails of the first auxiliary satellite and the second auxiliary satellite to form a first space base line and a second space base line which have the same tangent track base linecomponents, the imaging sensing device forms a first space baseline and a second space baseline of a time sequence based on time, frequency and space synchronization by a synchronization device so asto acquire space-time characteristics of ground area changes. Under the condition that high-precision, wide-width and three-dimensional imaging is provided on the basis of satellite formation, the time-space characteristics of ground area changes can be obtained through time, frequency and space synchronization.

Description

technical field [0001] The invention relates to the technical field of remote sensing, in particular to a remote sensing system based on satellite formation. Background technique [0002] The satellite remote sensing system refers to the active / passive imaging observation of the earth carried out by the satellite platform with sensors, and obtains various characteristic information of the earth in the form of digital images. The satellite equipped with synthetic aperture radar adopts the method of microwave active detection, through the pulse compression in the range direction and the synthetic aperture technology in the azimuth direction, it can penetrate clouds, rain, fog, sandstorms, etc., and has all-weather and all-weather working capabilities. It can realize high-resolution wide-format imaging of the ground, and is the most effective data acquisition method in cloudy and rainy areas all year round. [0003] Different from optical remote sensing, SAR satellites can obt...

Claims

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Application Information

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IPC IPC(8): G01S13/90G01S13/88G01S19/25G01S19/29G01S19/30
CPCG01S13/882G01S13/9023G01S19/258G01S19/29G01S19/30G01S13/9029G01S13/9058
Inventor 任维佳杨峰杜志贵陈险峰
Owner SPACETY CO LTD (CHANGSHA)