Abstract
To further study the basic principle and localization process of DV-Hop location algorithm, the location error reason of traditional location algorithm caused by the minimum hop number was analyzed and demonstrated in detail. The RSSI ranging technology was introduced to modify the minimum hops stage, and the minimum hop number was improved by the DV-Hop algorithm. For the location error caused by the average hop distance, the hop distance of the original algorithm was optimized. The improved location algorithm of DV-Hop average hop distance was used to modify the average range calculation by introducing the proportion of beacon nodes and the optimal threshold value. The optimization algorithm of the two different stages was combined into an improved location algorithm based on hop distance optimization, and the advantages of the two algorithms were taken into account.Finally, the traditional DV-Hop location algorithm and the three improved location algorithms were simulated and analyzed by beacon node ratio and node communication radius with multi angle. The experimental results showed that the improved algorithm was better than the original algorithm in the positioning stability and positioning accuracy.
Highlights
There are many methods for the division of node location technology
The improved algorithm is better than the original algorithm in the positioning stability and positioning accuracy
The positioning accuracy of the improved DV-Hop algorithm based on the minimum hops is always better than the original algorithm
Summary
The most commonly used is the division standard based on ranging and positioning technology and non-ranging location technology. At the same time, the accuracy of the algorithm is relatively high. The non-ranging location algorithm has low hardware requirements and low power consumption. The centroid method is a kind of non-ranging location algorithm, which is simple and easy iJOE ‒ Vol 14, No 6, 2018. Its positioning accuracy is low, which has become a limiting factor for the development of the algorithm. With the development of wireless communication networks, the requirements for positioning services are increasing, and there is no algorithm that can adapt to changing needs. It is necessary to study the high performance positioning algorithm with the improvement of the WSN performance requirement in the application field
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