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To address the issues of significant errors in minimum hop number selection and average hop distance estimation when applying the traditional DV-Hop localization algorithm in wireless sensor network nodes, an improved DV-Hop localization algorithm is proposed incorporating multi-communication radius hop optimization and hop distance weighted correction. Firstly, by dividing communication radius into hierarchical layers, the error in minimum hop number selection is reduced. Subsequently, the hop distance weighted method is implemented to further mitigate distance calculation errors between the anchor nodes and unknown nodes caused by irregular network topologies. Finally, the unknown nodes calculate their coordinates using the least squares method. MATLAB simulation results demonstrated that through these two-step improvements, the proposed DV-Hop algorithm achieves higher localization accuracy compared with the traditional DV-Hop algorithms and related methods across various simulated environments.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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