CAJ | 학술논문

定位技术在无线传感器网络中有重要的作用，针对基于RSSI的室内定位误差较大这一问题，通过对RSSI测距模型进行分析，提出一种基于RSSI的室内定位算法的优化方案。该方案将整体环境进行分割，对分割后的子区域进行环境参数拟合，同时对参考节点的可靠性通过权值进行衡量，取可靠性最高的三个参考节点完成定位，从而减小定位误差，通过Zigbee模块进行验证分析。实验表明，该改进方案明显提高了室内定位的精度。
정위기술재무선전감기망락중유중요적작용，침대기우RSSI적실내정위오차교대저일문제，통과대RSSI측거모형진행분석，제출일충기우RSSI적실내정위산법적우화방안。해방안장정체배경진행분할，대분할후적자구역진행배경삼수의합，동시대삼고절점적가고성통과권치진행형량，취가고성최고적삼개삼고절점완성정위，종이감소정위오차，통과Zigbee모괴진행험증분석。실험표명，해개진방안명현제고료실내정위적정도。
Localization is very important in Wireless Sensor Network(WSN). In order to solve the problem of a major error of the indoor positioning based on RSSI, this paper proposes an improved scheme to provide higher localization accu-racy by analysing RSSI-based distance estimated model. In this scheme, environmental parameter fitting will be executed in the divided child areas which are segmented from the overall environment, and then the three reference nodes of the highest reliability which is measured by weights are taken to complete the localization. Through the experiment on Zigbee module, it shows that the proposed method can obviously improve the localization accuracy.