Quantitative of Badminton Practice Based on Wireless Sensor Network

Table 9

Improved algorithm test results.

Real coordinates	Positioning coordinates	Absolute error	Relative error
(2.9, 3.6)	(2.576, 3.342)	0.413	9.039
(4.1, 2.4)	(3.298, 3.571)	1.419	33.451
(4.1, 1.2)	(4.628, 2.933)	1.812	35.109
(7.1, 3.0)	(6.399, 3.452)	0.833	15.523
(7.7, 4.2)	(6.588, 3.743)	1.202	20.341
(5.3, 6.0)	(5.132, 4.508)	1.500	29.064
(4.1, 5.4)	(5.076, 4.266)	1.496	31.924
(3.5, 4.2)	(3.621, 3.558)	0.652	15.071