Double-reflecting surface satellite antenna rotation missing area tracking system and method

A technology of satellite antenna and double reflector, which is applied in the field of satellite communication, can solve the problem of low cost of near-satellite interference, achieve low cost, simple equipment, and reduce the effect of near-satellite interference

Active Publication Date: 2017-01-04
SINOTRUST MARINE ZS SATELLITE COMM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the deficiencies existing in the existing satellite antenna automatic tracking system, the present invention provides a

Method used

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  • Double-reflecting surface satellite antenna rotation missing area tracking system and method
  • Double-reflecting surface satellite antenna rotation missing area tracking system and method
  • Double-reflecting surface satellite antenna rotation missing area tracking system and method

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Experimental program
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Embodiment 1

[0033] In embodiment one, if figure 1 , figure 2 As shown, an automatic tracking system for a ring-focus antenna includes a main reflector 1, a sub-reflector 2, and a feed source 3. The main reflector 1 is equipped with a servo tracking unit and a main control unit. The main reflector 1 and the sub-reflector 2 and the feed source 3 are coaxially arranged, the sub-reflector 2 can rotate around the axis and is equipped with a rotating mechanism 4, and the sub-reflector 2 has a local signal failure area 5 eccentrically set at the point where the field strength density is the largest.

[0034] In Embodiment 1, the local signal failure area 5 can be realized by means of local default, signal absorbing coating, and the like.

[0035] In embodiment one, if figure 1 As shown, when the axis of the main reflector 1 is aligned with the satellite, the main reflector 1 converges microwave signals to the sub-reflector 2, and the field intensity distribution on the sub-reflector 2 is unev...

Embodiment 2

[0039] In the second embodiment, if Figure 10 , Figure 11 As shown, the main reflective surface 1 rotates, and the local signal failure area 5 is set at the edge position of the main reflective surface 1. Signals with periodic fluctuations in strength are used as a basis for automatic tracking of satellite dishes.

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Abstract

The present invention discloses a double-reflecting surface satellite antenna rotation missing area tracking system and method for solving the problems existing in the automatic tracking system of a satellite antenna. The system comprises a main reflecting surface, a sub-reflecting surface, and a feeding source wherein the main reflecting surface is provided with a servo tracking unit and a main control unit. The main reflecting surface, the sub-reflecting surface and the feeding source are arranged concentrically with either the main reflecting surface or the sub-reflecting surface capable of rotating around an axis and provided with a rotation mechanism; the rotating main reflecting surface or the sub-reflecting surface is provided with a signal local failure region in a biased manner. Compared with step tracking, the system and the method of the invention has high precision and responds quickly. In contrast with cone scanning and tracking, the main reflecting surface and the sub-reflecting surface are coaxially arranged, which reduces the side lobe, interference from adjacent star and increases the applicability. Compared with mono-pulse, through the use of a signal local failure region for rotation and biased signals, it is possible to obtain sinusoidal like signals whose type and strength change periodically. Simple in structure, the manufacturing cost of the system is also low.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to a system and method for tracking a rotating missing area of ​​a satellite antenna with double reflectors. Background technique [0002] "Mobile Communication" is the abbreviation of "Moving Satellite Ground Station Communication System", which is used to realize the communication between mobile carriers and satellites. Satellite signals are weak and highly directional. In order to ensure that mobile carriers (such as ships, trains, etc.) receive stable signals to meet communication requirements, it is necessary to detect the deviation between the antenna and the satellite in real time and adjust the antenna attitude in time, Ensure that the antenna is aligned with the satellite in real time. Therefore, the antenna automatic tracking technology is one of the core technologies of the satellite antenna, and it is the premise to realize the stable communication between the mob...

Claims

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Application Information

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IPC IPC(8): H01Q3/20H01Q19/19
CPCH01Q3/20H01Q19/19
Inventor 亓常松潘洪军卓卫国虞海华
Owner SINOTRUST MARINE ZS SATELLITE COMM CO LTD
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