Precise Positioning of Farm Vehicle Using Plural GPS Receivers - Error Estimation Simulation and Positioning Fixed Point -
2011
Kim, S.C., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Cho, S.I., Seoul National University, Seoul, Republic of Korea | Lee, S.G., Kongju National University, Kongju, Republic of Korea | Lee, W.Y., Republic of Korea | Hong, Y.G., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Kim, G.H., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Cho, H.J., Chungcheongnam-do Agricultural Research and Extension Services, Yesan, Republic of Korea | Gang, G.W., Rural Development Administration, Suwon, Republic of Korea
This study was conducted to develop a robust navigator which could be in positioning for precision farming through developing a plural GPS receiver with 4 sets of GPS antenna. In order to improve positioning accuracy by integrating GPS signals received simultaneously, the algorithm for processing plural GPS signal effectively was designed. Performance of the algorithm was tested using a simulation program and a fixed point on WGS 84 coordinates. Results of this study are aummarized as followings. 1. 4 sets of lower grade GPS receiver and signals were integrated by kalman filter algorithm and geometric algorithm to increase positioning accuracy of the data. 2. Prototype was composed of 4 sets of GPS receiver and INS components. All Star which manufactured by CMC, gyro compass made by KVH, ground speed sensor and integration S/W based on RTOS(Real Time Operating System)were used. 3. Integration algorithm was simulated by developed program which could generate random position error less then 10 m and tested with the prototype at a fixed position. 4. When navigation data was integrated by geometrical correction and kalman filter algorithm, estimated positioning erros were less then 0.6 m and 1.0 m respectively in simulation and fixed position tests.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Korea Agricultural Science Digital Library