Wireless sensor network all-moving node positioning method based on RSSI
A wireless sensor and node positioning technology, which is applied in the directions of location-based services, positioning, radio wave measurement systems, etc., and can solve problems such as node positioning that cannot be solved.
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[0087] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further explained below in conjunction with specific embodiments.
[0088] Reference Figure 1-4 This specific embodiment adopts the following technical solutions: the present invention proposes a mobile node positioning algorithm based on RSSI weighted centroid, and the RSSI weighted centroid algorithm is applied to a wireless sensor network where anchor nodes and unknown nodes are fully mobile. Combining the speed of the unknown node with the change of the tilt angle at different times, to solve the problem that the RSSI positioning algorithm cannot be located when there are less than 3 anchor nodes.
[0089] 1. Determination of the ranging model
[0090] In general, the average power of the received signal shows attenuation as the distance increases. The theoretical model commonly used in wireless transmission is the sha...
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