Economical simple shipborne VSAT antenna system

Abstract

An economical simple shipborne VSAT antenna system comprises a control system, a multi-point electromagnetic positioning device and a parabolic antenna, and the multi-point electromagnetic positioningdevice comprises an arc-shaped porous plate and a base; a ball is fixed in the middle of the straight rod, and a permanent magnet block is fixed at the lower end of the bottom of the straight rod; asupporting ring is arranged over the arc-shaped porous plate, and the balls are embedded into the supporting ring in a matched mode. When the angle of the parabolic antenna needs to be changed, the ferromagnetic metal head is attracted by different rod-shaped electromagnets to move within the range of the arc-shaped porous plate, and the angle of the parabolic antenna is driven to be changed. Thesystem is small in size, simple in structure, low in cost, free of rotating parts, low in failure rate, long in service life and high in reliability; the position of the parabolic antenna can be fixedthrough the telescopic device, so that power consumption is reduced; as the ferromagnetic metal head directly reaches the target hole site from the original hole site, the adjustment speed is high, and the adjustment is completed in one step.

Description

Technical field[0001]The invention belongs to the technical field of shipborne satellites, and specifically relates to an economical simple shipborne VSAT antenna system.Background technique[0002]VSAT is a kind of miniature earth station or small earth station in traditional satellite communication system. It has the advantages of small antenna diameter, compact structure, solid, intelligent, low price, convenient installation, etc. It does not require high requirements for the use environment, and does not Restricted by the ground network, the networking is flexible. Therefore, VSAT has a wide range of applications in the field of shipborne satellites.[0003]In order to keep the signal stable, VSAT is generally equipped with a two-axis or three-axis servo tracking device to overcome the influence of the antenna on the satellite caused by the continuous shaking of the ship while sailing; a VSAT system with a stable servo tracking device is expensive. For larger ships, the cost is eas...

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Problems solved by technology

[0003] In order to keep the signal stable, VSAT is generally equipped with a two-axis or three-axis servo tracking device to overcome the impact of the ship's constant shaking on the antenna to the satellite; a VSAT system with a stable servo tracking device is expensive, For larger ships, the cost is easy to bear; for small fishing boats, cargo ships, etc., especially when the sea conditions are relatively bad, the swing of small ships is particularly obvious. Therefore, the stability requirements for servo tracking devices are high, but small ships cannot afford the price Expensive two-axis or three-axis servo tracking devices, and some low-priced servo tracking devices are prone to failure or lower star alignment accuracy due to the use of multiple rotating parts with multiple frequencies and large swing angles during long-term use. Big

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