The Accurate Location Estimation of Sensor Node Using Received Signal Strength Measurements in Large-Scale Farmland

Figure 3

The ranging measurement in the wheat field. L1, L2, L3, L4, L5, …, and L51 represent the location of node 1, the location of node 2, the location of node 3, the location of node 4, the location of node 5, …, and the location of node 51, respectively.