Approximate point-in-triangulation test (APIT) positioning method for wireless sensor network (WSN) based on automatic region adjustment
A positioning method and self-adjusting technology, applied to electrical components, wireless communication, etc., to achieve cost-saving effects
Inactive Publication Date: 2013-11-13
NANJING TECH UNIV
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Problems solved by technology
[0003] In order to overcome the problems existing in the existing APIT positioning method, the present invention provides a WSN approximate triangle interior point test positioning method based on area self-adjustment
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[0033] Such as figure 1 It is a principle block diagram of the present invention, a kind of WSN approximate triangle interior point test location method based on area self-adjustment, comprises the following steps:
[0034] 1. Network deployment: Through an emulator or a real network scene, a multi-hop self-organizing wireless sensor network topology is generated. Nodes in the network cooperatively perceive, collect and process information about perceived objects in the network coverage area, and the network topology The nodes in include ordinary nodes and anchor nodes whose coordinate information is known;
[0035] 2. Obtain neighbor anchor node information: nodes within the communication radius γ of the node to be located are the one-hop neighbor nodes of the node; nodes in the network have the ability to obtain neighbor node information, and through the communication propagation process of anchor nodes, unknown nodes Obtain the information of all neighboring anchor nodes, ...
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The invention relates to the technical field of node positioning in a wireless sensor network (WSN), in particular to an approximate point-in-triangulation test (APIT) positioning method for the WSN based on automatic region adjustment. The method comprises the following steps of: 1, deploying the network; 2, acquiring information of neighbor anchor nodes; 3, exchanging the information of neighbor nodes; 4, performing a first-round positioning, wherein positioning by the APIT method and positioning by the APIT method based on automatic region adjustment are performed; 5, introducing auxiliary nodes for positioning; 6, performing a second-round positioning, wherein the APIT method based on automatic region adjustment is adopted to position nodes of which the positioning is not completed in the step 4; and 7, completing positioning. According to the method, the positioning regions of the nodes are adjusted according to a network connection state, so the number of non positional nodes is reduced and the node positioning precision is improved. Under the requirement of acquiring the same positioning precision, more cost of network deployment can be saved by the APIT method based on automatic region adjustment.
Description
technical field [0001] The invention relates to the technical field of node positioning in a wireless sensor network, in particular to a WSN approximate triangle interior point test positioning method based on area self-adjustment. Background technique [0002] A large number of applications of wireless sensor networks require the geographical location information of nodes in the network. For example, in military tactics, the location information of sensor nodes carried by soldiers and chariots is the key basis for combat command. The tactical information sent back by nodes is related to The position of the node at that time is related. In addition, knowing the location information of sensor nodes can also improve routing efficiency, provide a namespace for the network, report the coverage quality of the network to the deployer, and realize network load balancing and self-configuration of the network topology. The positioning problems of wireless sensor networks are mainly ...
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IPC IPC(8): H04W64/00
Inventor 王辉杨雪
Owner NANJING TECH UNIV