STUDY ON THE CORRECT TILT OF THE NAVIGATION OF AGRICULTURAL MACHINERY BASED ON GPS

Hu Lei, Zhou Zhifeng

Abstract: In recent years, the development of GPS navigation technology is very fast, has been applied to almost everywhere in life, especially in the field of agricultural production in recent years is more important. In foreign countries, GPS navigation application in agricultural production development has been very mature, but in China, the application of GPS in agricultural machinery navigation is still in the stage of research and development, application in agricultural machinery navigation, the GPS navigation technology to achieve accurate positioning: the most important thing is to tilt, lateral posture correction, pure line operation and a series of work based on path tracking. The GPS carrier phase measurement technology, static positioning can not only realize agricultural accurate and real-time dynamic positioning; but also can achieve high-precision attitude measurement based on observation of carrier phase receiver. Through the vector in the process of operation because of the navigation error of surface height fluctuation generated by the tilt correction algorithm, can be derived on the agricultural machinery navigation correction, because in the process of agricultural navigation operation, positioning error vector produced by the inclination will directly affect the pure path tracking algorithm based on the trajectory of the straight line thus, effects of mechanization and efficiency of intelligent agricultural production, so the research of calibration for the error caused by the tilt is of great significance. Considering the difficulty of the experiment, our research is a double side antenna attitude, so in the original location of the next step is to collect model cars some simulation of agricultural operations process data, and then use MATLAB to carry out simulation on the PC machine, according to before and after correction for the navigation of agricultural machinery industry to observe the trajectory correction effect.

Keywords: GPS positioning; attitude measurement; tilt correction; simulation

DOI: https://doi.org/10.15623/ijret.2015.0405097