Mathematical Problems in Engineering

Research Article

Efficient Radio Map Construction Based on Low-Rank Approximation for Indoor Positioning

Figure 4

Radio maps constructed results by different methods with 150 reference points on the real data.
461089.fig.004a
(a) IDW
461089.fig.004b
(b) RBF
461089.fig.004c
(c) BLR
461089.fig.004d
(d) SLR