The Mini Unmanned Helicopter Based On Embedded Linux Real-time Positioning

Small unmanned helicopter,because of its light weight, small volume, strong concealment, high flexibility, low cost, and many other advantages and is very widely used in military target reconnaissance, people search, and many other military and civil fields. But small unmanned helicopter work Angle acceleration, speed and flight of the uncertainty of plus air resistance, weather factors and external factors such as work environment, all these will make small unmanned aircraft flight path becomes difficult to predict. Therefore, real-time understanding of small unmanned helicopter real-time location for observing whether it in a safe route flight has very important practical significance.In this paper, we study small uavs working space real-time positioning system implementation plan, with independent intellectual property rights research and design of small unmanned helicopter’s real-time positioning system, GPS global positioning system (GPS) in small uav real-time positioning system played a big role, this paper studies the composition structure and working principle of GPS system. Conversion of the coordinates of the spatial navigation system is studied. Based on embedded Linux OS to S3C2440chip, GPS module, the module nRF24L01communication, STM32chip for hardware development platform, deserve to go up in the corresponding application software, the research has real-time monitoring the implementation plan of the location in which the small unmanned aircraft, exploring research with independent intellectual property rights of small unmanned helicopter’s real-time positioning system.This paper discusses the thesis research to explore the practical significance and technical background, the GPS system and relevant knowledge of the embedded system is introduced in detail. And on this basis is given based on the Linux operating system of small unmanned helicopter real-time positioning system overall design scheme. Then analyzed the Linux kernel related issues, including part of the Linux kernel, transplantation, and analyses the device drivers. The design scheme of using samsung S3C2440chip microprocessor, adopts Linux as an embedded operating system, adopting new sirf3generation chip (REB3571) GPS module. Small unmanned helicopter on the GPS module to receive satellite space of wireless information, then the GPS module will receive the information transmission to the S3C2440chip, S3C2440chip receives the positioning information space after processing through the wireless communication system transmission to the ground stations.Finally, has carried on the review and summary to this article, pointed out the wrong place, put forward new ideas for improvement.