Beidou positioning system is called two-way communication. Can Beidou chip in mobile phone realize two-way communication?

Ordinary mobile phones cannot realize the bidirectional communication function of Beidou system, and only terminals with bidirectional communication chips can realize the bidirectional communication function.

Our mobile phones usually use the passive positioning, navigation and timing services provided by Beidou for free, but the realization of these functions also needs the support of positioning chips, which are different from the chips that realize two-way communication. Generally speaking, a special terminal is needed to use Beidou's two-way communication function. 1 Beidou's two-way communication function Two-way communication means that two-way short digital message communication can be realized between users and between users and the central control system. Beidou short message can be regarded as a "short message" that people usually use now. Beidou short message can publish 12 words of information, which can not only locate, but also display the publisher's position. Beidou short message service needs to be charged, and the terminal also needs to insert a special card. Beidou's short messages are divided into 4, 8 and 12 Chinese characters at a time (depending on the instruction manual of the equipment). If it exceeds this number, it is necessary to split the content into multiple messages and send them in packets according to the requirements of frequency.

?

Beidou short message function can not only enable users to obtain their own location information, but also inform others of their own location information, which is very suitable for scheduling and tracking of fishing boats, buses, vans and field workers. This two-way communication design is unique to Beidou system. GPS in the United States, Galileo in Europe, GLONASS in Russia, etc. do not have this function, and only one-way communication can be carried out, that is, the receiver can only passively accept the signal sent by the satellite and cannot actively send out the signal.

when carrying out emergency rescue in desert, mountainous area, ocean and other sparsely populated areas, Beidou satellite navigation system can not only navigate and locate, but also report the location and disaster situation in time by using satellite navigation terminal equipment through SMS function, effectively shortening the rescue search time and improving the timeliness of emergency rescue and disaster relief.

Tens of thousands of fishing boats have been equipped with Beidou two-way communication equipment in the main fishing grounds in the East China Sea and South China Sea. Fishermen can not only get the latest information on fish trading and typhoon warning in real time, but also realize danger reporting, cross-border alarm and self-help and mutual rescue. Use Beidou's short message service, much like the management mode of mobile phone. First of all, you need to buy a terminal (mobile phone) that supports Beidou short messages, and this terminal must meet the network access specifications. Beidou's network access license is based on the number in the Beidou user terminal equipment inspection report, which is unique. If you buy an untested Beidou device, you may not be able to access the network.

?

Secondly, you need to apply for a user number, which is similar to the number card of a mobile phone. Finally, insert the card into the device and you can use it. Note: Beidou equipment needs to be used in an open place, and Beidou signals cannot be obtained in closed spaces such as rooms, cities and tunnels.

For hikers, seafarers, herders, fishermen and outdoor workers, when there is no public network signal, Beidou two-way communication will play its unique feature: it does not depend on the ground network. But for ordinary people with WiFi and mobile base station signal coverage, Beidou two-way communication is really useless. You need to buy a special terminal and card number, and even if you don't use it, you need to pay a monthly or annual service fee. The above personal opinions, welcome criticism and correction. Agree with my opinion, please like it before you go, thank you! If you like me, please pay attention to me. Thanks again!