Improved RSSI Positioning Algorithm for Coal Mine Underground Locomotive

Table 2

Comparison of the positioning error.

Communication radius	5 m			10 m
Ranging model	Statistical mean model	Gaussian model	Gaussian-weighted model	Statistical mean model	Gaussian model	Gaussian-weighted model
Positioning error (without correction)/m	0.4780	0.3526	0.3645	1.0838	1.0126	0.8213
Positioning error (correction)/m	0.4215	0.3215	0.3187	0.8838	0.6126	0.5213
Communication radius	20 m			40 m
Ranging model	Statistical mean model	Gaussian model	Gaussian-weighted model	Statistical mean model	Gaussian model	Gaussian-weighted model
Positioning error (without correction)/m	1.9421	1.5765	1.3569	5.3751	3.4548	3.0521
Positioning error (correction)/m	1.6421	1.1765	0.9569	4.3751	2.7548	2.0521