Design Of High-speed Data Communications System For The Meteorological Emergency Vehicle

In recent years, the state has increased meteorological input into cause, into allaspects of the field of meteorology, weather detection means and ability to detectmeteorological modernization has improved greatly. The meteorological emergencyvehicles as an important part of the province meteorological emergency system, chargedwith the task of meteorological elements, images, sound and data, high-speed datacommunication. Traditional meteorological data transmission capacity of the emergencyvehicles no longer meets the high-speed, high-capacity data transmission. We need toinvestigate how to effectively optimize their communication system to improve thetransmission performance.Currently used in the field of civil communication, orthogonal frequency divisionmultiplexing, so that each of the data-bearing sub-carrier orthogonal to each other, sothe limited band within maximize spectrum efficiency, to improve the communicationlink data transmission capacity. Given the frequency division multiplexing advantage(efficient spectrum utilization), how to take advantage of the special high-speedtransmission capacity of orthogonal frequency division multiplexing weather emergencyvehicles is of great significance, make meteorological elements, images, sounds, andother data High-speed transmission. However, a conventional orthogonal frequencydivision multiplexing also exists on the Doppler frequency shift is very sensitive to thisdefect. When the meteorological emergency vehicles in high speed mobile environment,high-speed movement led to the Doppler frequency shift will inevitably lead to themeteorological emergency vehicle data transmission can be affected.Special requirements of large capacity combined with the meteorologicalemergency vehicles data transmission link stability, this paper analyzes the frequencydivision multiplexing a series of technical requirements, such as how to implement thethe weather emergency vehicles receiving end, the sender of the ease of implementation;how soundness; weather emergency vehicles in the complex fading channel conditionsand how to improve the meteorological emergency vehicles large-capacity datatransmission, in order to achieve the images, sounds and other high-speed data transmission, and so on. Orthogonal frequency division multiplexing based on thespecial requirements of the weather emergency vehicles and traditional systemcharacteristics, that a conventional orthogonal frequency division multiplexing systemused in the weather emergency cart limitations. In order to solve the above problems,the present paper key consideration the design of the frequency division multiplexingsystem based on the shaping filter function. Through analysis of the shaping filterfunction of time to spread, the frequency spread characteristics, focusing consider howto design the frequency division multiplexing system of the shaping filter function.When the weather emergency vehicles using the frequency division multiplexing systemdesign based on the shaping filter function, it is possible to inhibit weather emergencyvehicle speed data transmission in a high-speed mobile environment the presence of theDoppler shift, and to achieve high-speed data transmission.The research topics can play a very good role in guiding the use of meteorologicalemergency vehicles, around the city (state) also have a stronger role in guiding thetechnical staff of the Bureau of Meteorology master emergency vehicle transmissionmechanism. Meanwhile, technical support personnel to determine whether majorweather emergency vehicles Troubleshooting work in top working condition, which willgreatly enhance the technical support capabilities of the technical support staff at alllevels.