The invention discloses a
wireless sensor network covering method based on polar coordinates. The method includes the following steps that first, the position of the origin of the polar coordinates is set by a
server, and
wireless sensor nodes are converted into polar coordinate position information according to the position relation between a rectangular coordinate
system and a polar coordinate
system; second, the polar coordinate position information of each
wireless sensor node is sent to the neighbor nodes by the
wireless sensor node; third, according to the position information of the neighbor nodes, the virtual
radius of each node requiring to be changed when the node reaches the position tangent with the corresponding neighbor node in the radial direction relative to the neighbor node and the virtual
radius of the node requiring to be changed when the node reaches the boundary expectation position are calculated; fourth, each node is moved to a new coordinate position; fifth, the virtual angle of each node requiring to be moved when the
perception circle of the node reaches the position tangent with the
perception of the corresponding neighbor node in the circumferential direction is calculated, and the position information of each new node is updated; sixth, the operation is ended or the second step is executed again. Through the method, the coverage of a
wireless sensor network with the
node deployment area being round can be improved.