Figure 5From: Sensor models and localization algorithms for sensor networks based on received signal strengthEstimated sensor bias over time ( θ 1 ,i,n ) and space ( θ 2 ,m ) with sensor one as reference ( θ 1 ,i, 1 = 0). Left column for motorcycle (MC) and right column for four-wheeled ATV (FW), first row for microphones, second row for geophones.Back to article page