Three access points are located at AP1, AP2, and AP3 are located at (0, 0), (50, 0), and (0, 50), and a mobile terminal (MT) is located at (20,10).
(a) What are the expected distances between the MT and each of the APs?
(b) Assume that the distances from the MT to BS1, BS2, and BS3 are measured as 18, 35, and 38. What are the three ranging errors?
(c) Draw three circles corresponding to the distances measured from the base stations and determine the location of the mobile terminal. What is the distance measurement error for this system?