Big Dipper beacon system

Abstract

The invention discloses a Big Dipper beacon system. The system includes a terminal Big Dipper beacon device and a data monitoring center, the terminal Big Dipper beacon device acquires location information of a black box of an aircraft in danger, and sends information to the data monitoring center through a Big Dipper short message according to a certain time interval; and the data monitoring center monitors and processes, in real time, alarm short information and flight information returned by a Big Dipper satellite, and records the alarm short information and the flight information in a database. Automatic dependent surveillance broadcast (ADS-B) information, the information of the black box in danger and geographic information are fused to realize the goals of monitoring and tracking multiple aircrafts in danger; information is pushed to a superior department through Big Dipper short messages, the Internet, mobile communication networks and dedicated communication links; and based on navigation of the Big Dipper satellite and short message communication, it is ensured, by fusion of multiple communication methods and multiple information and data processing, that an aeronautic vehicle in danger can effectively and timely inform the data monitoring center of information such as location, identities and so on through the Big Dipper beacon device, so that the aeronautic vehiclein danger can be located rapidly and searched.

Description

technical field [0001] The invention relates to the technical field of Beidou satellites, in particular to a Beidou beacon system. Background technique [0002] According to GJB 2414-95 "General Specifications for Aviation Lifesaving Radio Stations", when the search and rescue aircraft is flying at an altitude of 3000 meters, the beacon range is 150 kilometers. Due to the low transmission power of the beacon, generally several hundred milliwatts, and the large environmental radio interference, the actual operating distance and direction finding accuracy are not high. In order to overcome the defects of radio position-indicating technology, the global satellite search and rescue system (COSPAS / SARSAT) jointly developed by Canada, France, the United States and the former Soviet Union replaced the radio position-indicating technology and became the global maritime satellite search and rescue system promoted by the International Maritime Satellite Organization. An essential com...

AI Technical Summary

Problems solved by technology

However, due to the low satellite orbit of the system (850km-1000km), the area covered by a single satellite is smaller than that of a geosynchronous satellite, so there is a certain risk to the target in distress under the current situation of six satellites working. Latency, especially near the equator The time between two satellites flying over the same area can be up to 1.5 hours

Although the addition of geostationary satellites in recent years has significantly improved the search and rescue response time of the satellite system, the system is controlled by foreign countries, and its unique encryption mode is not open to our country, which is not suitable for our country's life-saving positioning and military use

Images