无线传感器网络中RSSI测距技术的研究

Study on Ranging Technology Based on RSSI in Wireless Sensor Networks

在无线传感器网络的各种测距技术中,基于RSSI的测距技术是最常采用的方法。本文介绍了RSSI的测距原理,在对RSSI的测距方法进行深入研究的基础上,归纳出了曲线拟合法、场强分布法、RSSI差值法、误差补偿法、RSSI和距离区间映射法和混合测距法六种测距方法,分析了几种方法的优缺点,最后指出了RSSI测距方法中仍存在的问题,并给出了发展方向。对于无线传感器网络中的基于RSSI测距的定位技术的研究具有较高的参考价值。

Abstract- RSSI-based ranging technology is a most commonly used method in all ranging methods in Wireless Sensor Networks. On the basis of in-depth study on the RSSI ranging methods, this paper described the principle of the RSSI ranging, summed up six RSSI ranging methods. They are the curve fitting, the field intensity distribution, the RSSI difference method, the error compensation method, RSSI and distance interval mapping method and the mixed-ranging method. This paper also analyzed of the advantages and disadvantages of these methods. Finally, this paper pointed out that there are still problems in the RSSI ranging methods, and gave the direction of development. It has high reference value for the localization based on RSSI ranging in Wireless Sensor Networks.