Anchor-free combat casualty positioning method based on wireless sensor network
A technology of wireless sensor and positioning method, applied in the direction of location information-based service, data exchange network, transmission monitoring, etc., can solve the problem of increasing the traversal time, and achieve the effect of small error and accurate positioning
Inactive Publication Date: 2013-12-11
THE THIRD AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIV OF PLA
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Problems solved by technology
In this method, the virtual anchor points are gradually extended to all nodes in the entire network, which increases the traversal time and is not suitable for quick-response troops.
In addition, the algorithm is limited to the situation where the positioning area is small and there are many soldier nodes, which has certain limitations.
Method used
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[0031] like figure 1 As shown, the wireless sensor network-based non-anchor battlefield casualty location method of this embodiment includes the following steps:
[0032] 1) Soldiers and ambulance personnel on the battlefield carry sensors with them, mark each node with a unique ID, and form a wireless sensor network in a self-organizing manner;
[0033] 2) Nodes send their own data information and receive RSSI data of neighboring nodes in real time;
[0034] 3) The ambulance personnel node terminal receives the RSSI data of the soldier node, and judges and summarizes the existence information of the received signal, and generates a wireless sensor network node connection diagram;
[0035] 4) The ambulance worker node summarizes the RSSI data and calculates the relative coordinates of each node;
[0036] The specific steps to calculate the relative coordinates of each node are as follows:
[0037] 41) Translate the centroid of the graphics surrounded by each soldier node to...
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The invention relates to the technical field of wireless sensor networks, and discloses an anchor-free combat casualty positioning method based on a wireless sensor network. The method comprises the following steps that: 1, soldiers and rescue workers in a combat carry sensors, all nodes are respectively marked with a unique identity (ID), and the wireless sensor network is formed in a self-organization mode; 2, data information of the nodes is transmitted among the nodes in real time, and received signal strength indication (RSSI) data of a neighbor node is received; 3, node terminals of the rescue workers receive the RSSI data of soldier nodes, judge and collect existence information of received signals and generate a wireless sensor network node communication relation map; 4, rescue worker nodes collect the RSSI data and calculate corresponding coordinates of the nodes; and 5, when a wounded person cries for help, the rescue workers determine the position of the wounded person in the wireless sensor network according to the ID of the wounded person. By the method, the combat casualty can be accurately located without global positioning system (GPS) and anchors; and the method is applicable to combats.
Description
technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to an anchor-free positioning method for wireless sensor networks. Background technique [0002] Modern warfare is a fierce military confrontation with high-tech conditions, resulting in a large number of wounded, with complex and serious injuries. Whether the rapid positioning of the wounded can be realized in the field has become the key to the rapid rescue of the wounded. At present, GPS (Global Positioning System) has been used in the search and rescue of the wounded on the battlefield, but the satellite-based global navigation system is easily affected by various factors such as orbital error, ionospheric error, tropospheric error, multipath error, and antenna phase center change. At the same time, as an "open" navigation system, its received signals are easily subject to enemy blocking interference and deceptive control, thereby reducing or misleading its pos...
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IPC IPC(8): H04L12/70H04W4/02H04B17/318
Inventor 吴宝明高丹丹王圣超闫庆广冯正权
Owner THE THIRD AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIV OF PLA