Analysis On The Development Of A Ship Alarm System Terminal Based On BDS

Ship terminal BDS(Bei Dou Navigation Satellite System)Bei Dou Satellite Navigation System to receive the Satellite signal,through a single location or differential positioning,obtain accurate position coordinates information,the location information,together with the state of the ship,alarm and sensor input information through wireless communication sent to the monitoring center,and the computer System on the electronic map matching on the map to show the correct position of the ship.In case of emergency,you can through the ship borne terminal,using manual or automatic alarm,and alarm of the position of the ship type,such as data sent to the control center,after computer processing,will ship's precise location displayed on the electronic map,and report to the maritime,rescue and other institutions,to carry out emergency rescue.Ship terminal block by Bei Dou satellite navigation system are the main functions of receiving star positioning signal,the central processing unit to calculate the positioning signal to get location information(longitude and latitude,velocity,azimuth and time scale),again by the communication module to send the information to the monitoring server.Central processing unit can also be through the communication module receives the command from the monitoring center,so as to complete some of the other features,such as through other function modules realize alarm,phone,etc.As a whole,the current ship alarm system has been basically perfect,but still a blank in this aspect in China,the main reason is that lead to this problem have been ship alarm system has always been dependent on and navigation system in foreign countries,but the birth of the Bei Dou navigation marks the development of the satellite communications in China,this paper studies filled our country satellite communications enterprise in the application of ship industry,for our country's economic and technological development has a certain reference value.This article will combine relevant theory of Bei Dou satellite navigation system in our country,based on ship's alarm system of BDS paper expounds the function of the terminal,and from the hardware and the software design in the face of the ship alarm system based on BDS terminal for research and development.