Method for accurately acquiring beam pointing of satellite radar antenna

A radar antenna and beam pointing technology, applied in the satellite field, can solve the problems of complex engineering application implementation, large impact, and high degree of simplification of system principles, and achieve the effects of improving description accuracy, wide application range, and simple engineering application implementation.

Active Publication Date: 2018-06-12
SHANGHAI SATELLITE ENG INST
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although many researches and engineering implementation attempts have been made to improve the pointing accuracy of microwave beams of spaceborne radar payloads, there are still some problems, such as high degree of simplification of system principles, complex engineering application implementation, and the influence of space environment such as orbital thermal environment. Larger and other deficiencies
[0006] Aiming at these application deficiencies, the present invention provides a method for accurately obtaining satellite radar antenna beam pointing, in order to solve many constraints and deficiencies in the prior art from the engineering implementation level

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for accurately acquiring beam pointing of satellite radar antenna
  • Method for accurately acquiring beam pointing of satellite radar antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0021] Such as figure 1 and figure 2 As shown, the present invention is used to accurately obtain the method for satellite radar antenna beam pointing and comprises the following steps: Step 1, satellite 6 is equipped with microwave transmission antenna 4 (abbreviation transmission antenna), laser transmitter 3 and star sensor 1, wherein transmission antenna and The laser transmitter has a common reference, and the transmitting antenna is located in front of the satellite radar antenna 2 (referr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for accurately acquiring beam pointing of a satellite radar antenna, comprising the following contents: (1) a satellite is equipped with a microwave transmitting antenna, a laser emitter and a star sensor, wherein the transmitting antenna and the laser emitter have a common basis reference, and the transmitting antenna is located in front of a satellite radar antenna and directed to a radar antenna; (2) the transmitting antenna transmits microwaves to the radar antenna, the radar antenna receives and acquires the direction of the microwave beam in the transmitting antenna coordinate system, and the inversion obtains the radar antenna in the transmitting antenna coordinate system. The beam is pointed at the time of transmitting the microwave; (3) at the sametime (2) the laser emitter emits laser light into the star sensor, and the star sensor acquires the beam pointing and the position of the laser emitter in the star sensor coordinate system. The invention directly converts the microwave beam pointing information into the satellite star sensor coordinate system through the on-board optical reference and the microwave electrical reference conversion,and accurately acquires the beam in-orbit pointing information.

Description

technical field [0001] The invention relates to the field of satellites, in particular to a method for accurately obtaining the beam direction of a satellite radar antenna. Background technique [0002] Synthetic aperture radar is an active earth observation system that can be installed on aircraft, satellites and other flying platforms to implement all-day and all-weather earth observation. Because of its unique advantages in disaster monitoring, environmental monitoring, ocean observation and resource exploration, it has attracted more and more attention from all over the world. Especially with the rapid development of aerospace technology in recent years, more and more radar payloads have been applied to space observation of the earth, and spaceborne microwave radar payloads in the form of phased arrays and paraboloids have appeared one after another. [0003] For spaceborne microwave radar payloads, its primary application is earth observation imaging. Therefore, whethe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01S3/14G01S3/78
CPCG01S3/14G01S3/78
Inventor 杨金军于广洋姜岩薛伶玲范季夏
Owner SHANGHAI SATELLITE ENG INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products