Development of an Accurate Positioning System Using Low-Cost L1 GPS Receivers |
| |
| Authors: | Masayuki Saeki Muneo Hori |
| |
| Affiliation: | Department of Civil Engineering, Faculty of Technology and Science, Tokyo University of Science, 2461 Yamazaki, Noda, Chiba 278-8510, Japan;;Earthquake Research Institute, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-0032, Japan |
| |
| Abstract: | Abstract: The present article reports the development of an accurate positioning system based on GPS technology. This system employs an inexpensive L1 GPS receiver and a small patch antenna. As these devices are very inexpensive and small, they can be attached to an array of sensor nodes of a wireless network sensing system. In the present study, we first develop a program that can be used to estimate the relative positions of receivers and evaluate its performance. Next, a number of experiments were conducted to assess the performance of the inexpensive L1 GPS receiver with a patch antenna. Compared to the results obtained using a sophisticated antenna, the present measurement system, which uses a patch antenna, is less accurate. However, the present system achieves an accuracy of 1–2 cm. This system can be used as a localization system for the sensor nodes or, because of its accuracy, as a displacement monitoring system. |
| |
| Keywords: | |
|
|
