The Provincial Information Office organized the acceptance and review meeting for the Guizhou Civil Air Defense Shortwave Communication System project

The relevant person in charge of the review meeting introduced the basic situation of the project, the construction unit reported the construction overview of the project, and summarized the previous stage of sub item training and preliminary acceptance. Finally, the expert group questioned the project related issues and unanimously agreed to pass the project acceptance.

Spectrum analyzer using skills

Today, I 'd like to introduce some skills in the use of spectrum analyzer-setting the three parameters of SPAN, RBW and VBW reasonably. I hope it can help you in the process of using the spectrum analyzer.

Principle of Interworking Scheme between Public Network PoC Soft Intercom and PDT Digital Cluster

The public network PoC soft intercom is a mobile communication system for command and dispatch, which is established by relying on the mobile communication network of the operator. PoC soft intercom can realize cluster intercom function with little traffic, and has more powerful functions than traditional intercom, such as instant message, picture transmission, real-time video transmission, etc. The implementation principle of public network PoC soft intercom is relatively simple, and it adopts C/S (client/server) mode. Only by deploying PoC server on the network side and developing a soft intercom APP, the smart phone can be turned into a powerful intercom. Its main positioning is to provide work management and command and dispatch services for enterprises, institutions, and organizations. It mainly faces group users, such as public security, fire protection, hospitals, urban management, government agencies, transportation, airport aviation, large gatherings, and military applications. Wait. Due to its wide coverage and low cost, it can be quickly deployed in batches to meet the needs of these groups to improve the speed and efficiency of emergency response.

Solution of Enterprise Cluster Emergency Dispatch Communication Service

The trunking communication function refers to one-click, quick connection, and group communication. Its function is similar to a walkie-talkie. Users can immediately talk to one or more users by pressing the key. As long as it is in the 3g mobile network coverage, the two sides can have a dialogue. different from walkie-talkie, ptt talks through wireless mobile network, and the range of communication is no longer limited to a few kilometers. as long as it is in the place covered by 3g mobile network, the two sides can talk. This communication mode is suitable for use in mobile network call congestion and command and dispatch (group call) conditions.

Emergency industry market prospects

The emergency industry is an emerging industry that people are both familiar with and unfamiliar with. It is an industry that provides special products and services for emergency prevention and emergency preparedness, monitoring and early warning, disposal and rescue. In recent years, China's emergency industry has developed rapidly and played an important role in emergency response. It is estimated that the output value of emergency products and services in the fields of fire protection and security, emergency communications, disaster prevention and mitigation, and counter-terrorism in my country has reached nearly one trillion yuan. The "Opinions on Accelerating the Development of the Emergency Industry" issued by the State Council in 2014 proposed that by 2020, the scale of the emergency industry will be significantly expanded and the emergency industry system will be basically formed.

Solution of Forest Fire Prevention Emergency Communication Vehicle

Emergency communication vehicle solution for forest fire prevention emergency communication command vehicle is a tactical communication network established by mobile communication system focusing on the needs of on-site information transmission such as forest fire fighting and using shortwave, ultrashort wave, satellite, mobile and other communication means. It has the ability to comprehensively use a variety of communication means and transmit a variety of communication services in a mobile environment. The mobile communication system of the emergency communication command vehicle, as the on-site emergency command center of forest fire, can have different configurations and functions, and can be used as an extension and extension of the fixed command center. The field environment and mobile characteristics put forward higher requirements for the mobile communication system, which should have real-time, reliability, seamless connection, high bandwidth, large capacity and transmission of multimedia information. In addition, in order to facilitate communication in the field and mobile environment, the equipment of the mobile communication system is required to be small in size, light in weight and easy to deploy, so the power, processing capacity and storage capacity of the communication equipment will be limited.