Shanghai Maritime University

Junling Ma

Yongsheng Yang

Xinqiang Chen

Huafeng Wu

Jiangfeng Xian

Chaofeng Li

Qiannan Zhang

Xiaojun Mei

Linian Liang

A node positioning method for marine environmental monitoring wireless sensor networks is provided, which jointly estimates node positions and path loss factors by considering the node real-time movement and the path loss and absorption effect of underwater communication; transforms an original non-convex problem into a non-negative constrained least squares framework, and finds the optimal solution of marine node positions by two stages of interior point method and block coordinate update. In the first stage, the problem is re-expressed by using the penalty function according to the interior point method to obtain the approximate solution; and in the second stage, the original problem is transformed into a generalized trust region sub-problem, and the approximate solution obtained by the interior point method is used as the initial estimation, the accurate estimation values of the marine node position and path loss factor are obtained by iterative solutions combined with the block coordinate update.

Node positioning method for marine environmental monitoring wireless sensor networks

Growing community of inventors

Shanghai, China

Junling Ma