Research And Implement Of A Kind Of Wireless Data Terminal System Suited For Field Remote Sensing Experiment

With the rapid development of wireless sensor networks technology, relying on wireless sensor network information collection and dynamic monitoring technology in residential security, intelligent furniture, dangerous area of signal acquisition, intelligent transportation and other fields has been widely used and create huge economic value and social value.Chinese Academy of Sciences of remote sensing and Digital Earth Research Institute for Environmental Remote Sensing Research Center, the State Forestry Administration "wetland ecological system evaluation of the pilot demonstration project group jointly organized field remote sensing experiment team at the completion of Sichuan Ruoergai, Hulun Buir, tie the complex changes in the Eling Lake and other areas of a series of remote sensing science experiments encountered such as temperature,humidity, high altitude air pressure, wind speed and other natural environment lead to part of the research staff of physical discomfort, leading to deployment of GPS control points some students lost, suffering from cold and hunger. Seriously affect the health of the scientific research personnel, so that scientific research work is blocked. Need an easy to carry collection of atmospheric parameters real-time acquisition analysis, analysis of weather, health parameters information real-time acquisition and monitoring analysis and trajectory real-time information acquisition and monitoring to various applicable to field remote sensing experiment of wireless data terminal system.This paper is put forward under the background, the purpose of which is to build based on ZigBee for in the field of remote sensing wireless data terminal system, improved traditional geographical space path distance algorithms, to improve the field work efficiency of scientific research personnel,improve their scientific methods to ensure the safety of, improve the effect of research provides a complete solution.One of the contributions of this paper is to design and implement a wireless data terminal system which is suitable for field remote sensing experiment. Firstly, through the analysis of scientific research personnel in field experiment environment is complex and slow to change, a long period of time, the body of scientific research personnel is easily affected by the objective conditions, and according to the characteristics of Zigbee technology in wireless sensor network, the integration of the atmosphericparameters acquisition sensor, health parameters acquisition sensor, location information acquisition sensor,Zigbee wireless transceiver module the procurement and signal; then, according to the WPF Bing maps[21]software technology, design and Implementation Based on improved spatial path distance calculation algorithm for the completion of each module of the system software, and considering the weather, the central meteorological station called Web Service services to complete the weather forecast function;finally completed the overall design and system integration of hardware and software module.The second contribution of this paper is using small area within the scope of the warp and weft is vertical properties derived out a spatial path distance computation algorithm, temporarily called the NewRemoteGeo algorithm. In the traditional calculation of three-dimensional spherical geometry model of geographic space distance research based on the Haversine algorithm and Apache Lucene algorithm in the spatial4 j toolkit based on the analysis of the accuracy of their existence, computation performance is not good, the algorithm is complex, the requirements on the specific application of computing the geographical spatial distance on the path number high precision, high frequency wireless data terminal system combined with field remote sensing experiment, the small scope of warp and weft threads is deduced by the vertical attribute NewRemoteGeo algorithm computing a spatial distance, the algorithm without loss of accuracy,optimize and improve the computational performance.In this paper, the design and Realization for in field remote sensing experiment of wireless data terminal system has Chinese Academy of science, remote sensing and digital earth research in the field of remote sensing research experiment has been practical application, and extended to the middle school students in long-distance information acquisition in other sectors. And to build historical data, convenient to view the analysis of historical data. After the actual use and test, the applicable to field remote sensing experiment of wireless data terminal system fully meet the needs of scientific research personnel in the field, for the scientific research personnel timely hedging, regulating body condition and develop research plan to provide the valid data to solve the many scientific research personnel affairs of the opposition to the insecurity. In the field of environmental monitoring system of the other has obvious advantages in portability, durability, accuracy, etc.