The Study Of GIS-Based Navigation And Yield Monitor System

Geographical Information System (GIS) is a dimensional information system, which collects, reserves, manages, analyses and describes the data of the whole or part of earth's surface that relate to spacial geographic distributing. The usage of GIS into digital agriculture actualizes many functions, such as information input, information analyse, information expression and decision-making, etc. GIS offers instrument to manage farmland information, it's a key technology for digital agriculture integration. This thesis which is imbursed by National High-tech R&D Program (863) "Digital Agriculture", studied the usage of GIS in two field mentioned as follows.1. Digitization of Grain Yield Distributing Information, which incloud:1) after coordinate transformation and other data processing, obtained digital maps of the territories, and displayed the combine's track in the digital map dynamically.2) Through disposing data of the yield-instrument sensors and GPS receivers, portrayed yield waves and yield maps according to the yield data together with its corresponding coordinates.3) Superadded the header's height, real-time reaped area was calculated.4) During post treatment, spatial analyses were made to get the yield distribution.2. Unmanned Aerial Vehicle navigation system:1) Build Windows XP Embeded system, which assured the stability and reliability of the navigation system.2) Developed the navigation software to control the UAV, whose functions include communication with the PC 104 computor fixed on the airplane.3) Present an algorithm for map matching, design the flight route for UAV, and do some reseach on the algorithm of navigation and autocontrol.4) The connection, transformation and display of vedio image, according to the parameters, simulate the pose of UAV on the technology of Virtual Reality.Recur to MapObjects, developed software of grain yield distribution digitization system, obtained digital maps of the territories, displayed the combine's track in the digital map dynamically, portrayed yield waves and a yield maps, calculated reaped area, offered decision-making system with basis so as to supervise yield.In developping software of aerocraft navigation and control system, studied the inertial/GPS integrated navigation system and map-matching algorithm, designed the flight route, studied the methods of navigation and control, etc. Recur to OpenGL, according to the gesture of aerocraft, simulated the virtual reality scene, lay a foundation for aerocraft navigation and control system.