Design And Implementation Of Weather Modification Access Server Based On Multi-protocol

Nowadays many provinces and cities have carried out the research and development of weather modification command system, most of which focus on the weather modification command system platform research, namely, analysis and decision research on weather modification business. However, few of them focus on further research of weather modification access server, which is the transmission and communication core of system. In order to improve the data transmission accuracy, efficiency and reliability of various weather modification operating systems, and this paper introduces a design and implementation of the access server of weather modification based on multi-protocol in detail.The structure of weather modification access server is designed by three layers, including user management layer, business processing layer and data layer. Among them, the user management layer is a software application which based on the.NET framework and programmed by C#. Through the software, the manager can check both command system and client-pad information, for example, online status, dropped status, and the transmission data between command system and client, meanwhile the manager can easily configure the various parameters of access server, such as IP address, port and whether the application to be auto-loading, etc. So it provides a good human-machine interface for professional manager. And business processing layer is the core of access server. According to different requirements of the weather modification business, this paper adopts hybrid TCP-UDP transfer protocol to transmit common commands, job documents and videos, etc. The main purpose of this layer is to maintain the connection between command system and client-pad, check and convert the format of the data packet, schedule different business requirements to different functional modules for processing, keep real-time online and dropped reconnection of the operating receivers via a variety of means. Data layer supplies a storage interface for the user management layer and business processing layer, making the business logic and data isolated effectively. Additionally, this server designs a simple load balancing system for database cluster, which uses an adaptive data access mechanism for accessing user data and business data. Thus, the proposed server realizes the following functions such as the user authentication, viewing real-time and historical data, querying operating log and automatic update of the client software, etc.This access server has been deployed and applied in Weather Modification Real-time and Intelligence command system in Jiangsu province. In the process of actual weather modification operation, it performs efficiently, stably and reliably. To sum up, this access server has reached the initial design target.