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RockyQu avatar RockyQu commented on July 19, 2024

比如 rssi 是 -34 height = 0.35, n = 2.59, p = -59.0 计算出的值是 NaN

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megagao avatar megagao commented on July 19, 2024

public double getDistance(double height, double n, double p0){
/基站到定位终端的直线距离/
double rawDistance;
rawDistance =Math.pow(10, (p0-rssi)/(10*n));
/基站到定位终端的水平距离/
return Math.sqrt(Math.pow(rawDistance, 2)-Math.pow(height, 2));
}
根据衰减模型计算距离的时候,出现了不可计算的情况,主要是距离太近了,比p0还强,你可以对照公式推一下

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140ai avatar 140ai commented on July 19, 2024

public double getDistance(double height, double n, double p0){ /基站到定位终端的直线距离/ double rawDistance; rawDistance =Math.pow(10, (p0-rssi)/(10*n)); /基站到定位终端的水平距离/ return Math.sqrt(Math.pow(rawDistance, 2)-Math.pow(height, 2)); } 根据衰减模型计算距离的时候,出现了不可计算的情况,主要是距离太近了,比p0还强,你可以对照公式推一下

你好,我对“建模与测量终端到基站的距离”下面的公式有点不理解
di pi RSSIi 分别是什么

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