Author(s)

Huang Lili

Corresponding Author

Huang Lili

ABSTRACT

Location accuracy of wireless sensor network relies on noise level and connection of non-line of sight. So, Location correcting algorithm based on semi-definite programming is proposed and it is based on edge-semi-definite programming; it is denoted as ESDP_O algorithm and it aims to increase location precision and reduce location time in severe environment. ESDP algorithm is modified and robustness of ESDP_O algorithm in high error environment of distance measurement is increased for ESDP_O algorithm through quoting dithering matrix. ESDP_O algorithm handles high noise and deviation of non-line of sight through seeking low-rank solution. Simulated result indicates that location precision of ESDP_O algorithm is better than algorithms of the same kind and calculation complexity is also reduced in environment of high noise and that most distance measurement is non-line of sight.

KEYWORDS

Wireless sensor network, Location, Semi-definite programming, Non-line of sight, Robust