| 摘要: |
| 基于RSSI的测距技术是一项低成本的距离测量技术。分析了接收信号强度指示器(RSSI)多种
测距模型，结
合采用IEEE802.15.4协议的CC2430芯片，设计了测距实验，获取了多组数据，通过对实验数
据的分析，提出结合信标节点确定参数、高斯拟合确定测量值的RSSI测距处理方法。实验证
明，该方法能提高RSSI测距的抗干扰能力，20 m内节点间的测距精度能达到15 m
以下。 |
| 关键词: 无线传感器网络 接收信号强度指示器 测距精度；高斯拟合 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目(50807011);湖南省自然科学基金项
目(07JJ6128);湖南省科技厅资助项目(2008FJ3114);湖南科技大学基金项目（G30735） |
|
| Ranging Method and Accuracy Analysis Based on RSSI of Wireless Sensor Network |
| ZHAN Jie,WU Ling-xi,TANG Zhi-jun |
| (College of Physics, Hunan University of Science and Technology，Xiangtan 41120
1,China) |
| Abstract: |
| Received Signal Strength Indicator(RSSI) ranging technology is a low-cost distan
ce measurement technique.
In this paper the models of ranging based on RSSI are analysed,and the
ranging experiment is designed with the chip of CC2430,a number of data is obtai
ned.The approach in which beacon nodes determine the parameters and Gaussian fit
ti
ng determines the value of the RSSI measurement ranging is proposed by analysing
the test data. Experiments show that the method can improve the antiinterferen
ce ability of RSSI ranging,and 20 meters ranging precision can reach 1.5 meters. |
| Key words: wireless sensor network(WSN) received signal strength indicator(RSSI) ranging ac
curacy Gaussian fitting |
