秸秆焚烧定位系统中的DV-Hop算法的改进

Improved DV-Hop algorithm in positioning system of straw burning

焚烧秸秆会对大气产生严重污染,危害人体健康,及时准确获得焚烧秸秆的位置信息显得尤为重要。这对秸秆焚烧定位系统的定位精度要求很高。传统的DV-Hop算法定位误差很大,秸秆焚烧定位系统中采用一种基于最小均方误差准则的DV-Hop改进型算法,能够有效提高定位精度,其主要分为两个方面,一种是使用均方差的方法求解平均每跳距离,另一种是用传统方法算出平均每跳距离之后采用加权平均的方式求得加权平均每跳距离。在Matlab仿真测试中表明,在同样的参考节点环境中,改进后算法的定位精度比改进前的有大幅度提高。

Straw burning can cause serious air contamination and endanger human health.It is very important to get accurate position information of the burning straw timely.It requires very high positioning accuracy.The traditional DV-Hop algorithm positioning error is large.The burning of straw positioning system adopts an improved DV-Hop algorithm based on minimum mean-square error criterion so that it can effectively improve the location accuracy.It is divided into two areas,one is to use the mean square error method to solve the average hop distance,another one is to use the weighted average method to calculate the weighted average distance after using the traditional method to calculate the average distance of each hop.The improved algorithm’s positioning precision is much higher than the before in the same reference nodes environment by the MATLAB simulation test.