Motion target tracking method of asynchronous wireless sensor network

A wireless sensor and moving target technology, applied in the field of wireless networks, can solve problems such as poor accuracy performance, failure of moving target tracking, and inability to apply low energy consumption.
CN101925178AInactive Publication Date: 2010-12-22SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2010-12-22
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a motion target tracking method of an asynchronous wireless sensor network, belonging to the technical field of a wireless network and comprising the following steps: establishing a wireless sensor network and performing network location initialization setting; and emitting signals once at an interval of L numbered clock periods, transmitting the corresponding measurement value to a sink node by each sensor node, and synthesizing a measurement vector by the sink node to be used for displacement evaluation and threshold updating. The method in the invention has good numerical stability, especially under the condition of low speed motion, maintains the precision of technical paper, and has good practical prospect in the sensor network with a larger distribution range.
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Description

technical field

[0001] The present invention relates to a method in the field of wireless network technology, in particular to a method for tracking a moving target in an asynchronous wireless sensor network based on TDOA (Time Difference of Arrival, signal time difference of arrival). Background technique

[0002] In recent years, based on the wireless sensor network (WSN) platform, moving target tracking technology has been more and more practically applied in road monitoring, military reconnaissance, industrial manufacturing, air traffic control and other fields. This is mainly due to the low cost of sensor devices in wireless sensor networks and the development of network information fusion technology. Moving target tracking is an important content in the application of wireless sensor networks. The existing technologies mainly focus on the moving target tracking technology in synchronous wireless sensor networks, while the moving target tracking in asynchronous wireless...

Claims

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