A Least Square-Based Self-Adaptive Localization Method for Wireless Sensor Networks

Table 5

Localization error convergence graphs of different location method with (0, /10) noise.

Serial number of unknown node	Localization error convergence (iteration times)
	Maximum likelihood-based self-adaptive	Least square-based self-adaptive (proposed)
1	150	120
2	1200	300
3	No convergence	400
4	1100	270
5	160	150
6	1000	275
7	8000	180
8	No convergence	No convergence
9	8000	370
10	1100	250
11	No convergence	8000
12	No convergence	No convergence
13	No convergence	No convergence
14	No convergence	700
15	No convergence	No convergence
16	1100	200
17	8000	280
18	No convergence	No convergence
19	8000	300
20	1200	220
21	100	100
22	1100	200
23	No convergence	480
24	1200	200
25	130	120