| The thesis analyze and study how to apply technology of GPS, GIS, GSM, Dopplerradar, computer and data processing and communication to weather modificationoperations. GPS technology is used for the real-time positioning of the on-board rocketvehicle, and GSM technology is applied to realize the communication between theon-board rocket vehicle, monitoring center and the air traffic control department. GIStechnology is used to automatically display the position and state information of theon-board rocket vehicle on the electronic map of monitoring center. a number of theon-board rocket vehicle whose location are visually known at any time, and can bemonitored, dispatched and commanded. A combination of radar echo and GIS are usedto realize that the Doppler radar echo is overlapped on the GIS electronic map, whichprovides the best operation time and the optimal operation of regional information forthe command staffs of artificial precipitation operation. Suitable operating points ofweather modification is carried on the priority airspace application, and is implementedthe artificial rainfall operations. The work efficiency is improved. In addition, Databaseis used to manage the information of weather modification. These have improved GPS,GIS, GSM and Doppler radar technology about the level of application of weathermodification, which is great in both theory and practice. The primary contents are asfollows:1. Real-time and accurate positioning process of the on-board rocket vehicleGPS mobile phone on the on-board rocket vehicle acquires information of positionand the current velocity vehicle from the satellite, short messages of GSM aretransmitted to the signal receiving card of positioning server，read data through theCOM port driving or timing event, and stored in the location server, At the same timethrough the WinSocket service control, transmitted to MapX dynamic layer of eachcommand terminal on LAN. According to the longitude and latitude data of GPS, eachon-board rocket vehicle is identified, then according to receiving frequency of the GPSdata, the layer is refreshed, and real-time positioning of each on-board rocket vehicle isgot. 2. GSM short message transmit-receiveThe file data and location data is transmitted, or notified between the on-boardrocket vehicle and monitoring center, between monitoring center and Air traffic controldepartment, Through the short message sending and receiving platform of themonitoring center, the connection among the three is realized. Visual Studio VB6.0integrated SMS control is used to achieve GSM short message transceiver module.3. Short message port congestionMethods is the SMS transceiver control in the system integration, the allocation ofmodular function is used to increase port number, and solve the short messagecongestion, Diagnosis function of the SMS transceiver control is used to realize thefunction of automatic detection of message congestion and automatic deletion ofblocked SMS of GSM card.4. Doppler radar echo is overlapped in the GIS electronic mapElectronic map of the MapX control processes and overlaps Doppler weather radarecho, the optimal working area and time are can be convenient to determine. The Tabledata format of the MapInfo is directly modified to display the raster data. The defect isovercome that the MapX control displays the raster data after the MapInfo registrationprocessing each time.5. The information management of weather modificationThe conventional meteorological data and the non-conventional meteorologicaldata, the equipment information, operation information and personnel information arerequired to be managed. The client uses Visual Studio VB6.0to realize the efficientquery, search, add, delete, and modify the functions. The server realizes the function ofbuilding database, creating tables and backup by SQL Server2000. |
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