Patent ID: 9599699
Date: 2017-03-21
CPC Classifications: G01S,H04B

Claim:
1. An RSSI positioning method based on frequency-hopping spread spectrum technology, comprising: measuring RSSI values of a plurality of channels at fixed points, and recording and calculating at least one ranging parameter in an RSSI ranging model; deploying a wireless sensor network and synchronizing between a target node and a plurality of anchor nodes in the wireless sensor network; communicating with the plurality of anchor nodes, via the target node, by respectively utilizing a plurality of channels, thereby obtaining the RSSI values; the plurality of anchor nodes eliminating the channels with relatively large RSSI value error from a frequency-hopping spread spectrum (FHSS) sequence according to the received position signal strength of the sending node in one FHSS cycle; and updating the FHSS sequence and adding the eliminated channels to a blacklist; processing the RSSI values into signal strength amplitudes and performing optimization; and calculating, for each anchor node in the plurality of anchor nodes, a distance value between the target node and the respective anchor node on a positioning server according to each of the signal strength amplitudes, and calculating the position coordinate of the target node, wherein said RSSI values are processed into signal strength amplitudes and optimized, comprising the following steps: wherein A RSSI wherein the central value A