Research And Development Of Blinding Spot By Positioning The Accelerometer

GPS positioning system positioning technology is the most important, its military and civilian areas has been widely used for military war and people's daily lives has brought great convenience. GPS has been widely used in the current positioning, tracking, alarms, alarm, remote control and other areas in the future, with increasing GPS accuracy, technology continues to improve, and its daily application in various fields of social life will continue to move forward.GPS positioning systems is widely used, but there are some applications of its defects. In a dynamic environment or block area (this is called blind GPS), GPS receivers can not catch in time to the GPS positioning and tracking the signal, resulting in failure of GPS positioning function, can not be continuous and accurate positioning of personnel. In addition, GPS positioning signals alone can not fulfill its potential value, hence its combination with other means of communication can effectively extend the application of location information to further expand the GPS positioning applications.In this paper, GPS positioning and the principle of acceleration sensor to start on the current most popular ZigBee, GPRS and Wi-Fi three types of communication, and finally the acceleration sensor navigation technology and communication technology are combined to form a blind acceleration sensor positioning navigation technology. This article describes the main contents are as follows:1.The describes of the composition of GPS positioning system, GPS positioning error sources, specifically the GPS positioning error, and on this experience, the principles introduced by the acceleration sensor, acceleration sensors of the positioning algorithm.2.The describes of the current mainstream wireless communications technologies, including ZigBee, GPRS and Wi-Fi, introduced their technical characteristics, network protocol, communication, networking features, working principle and so on. And based on their technical characteristics, positioning them in the role of the research project.3.The describes of the overall system design and implementation. Overall design of the system terminal, the terminal block into the structure to build the application layer framework design for the board outline, the last terminal on the system hardware and software detailed design.4 research and development system terminal, in the indoor and outdoor locations for a system test, in a number of different indoor environments, repeatedly simulated test, record the test data to verify the system terminal design, and found shortcomings in the current system terminal. The test data for the further improvement of the terminal design, to provide experience to improve positioning accuracy.Through this study, the use of accelerometer and GPS positioning system navigation technology combination of blind spots can be resolved in the GPS positioning. When the receiver is able to receive GPS location signals, using GPS positioning system for positioning; when the receiver can not get GPS signal, obtained from the initial baseline GPS positioning system location, personnel use a variety of acceleration sensors for speed, direction and location information, and get the staff to obtain location information for dead reckoning, to locate the target, in order to achieve self-positioning in the GPS blind spots. In addition, the location information and communication technology, location information can be used to expand the scope of the acceleration sensor to improve the added value of blind positioning, market research results to ensure the conversion.