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Method for implementing self-organizing network positioning system based on time division-synchronous code division multiple access

A self-organizing network and code division multiple access technology, applied in the field of fast and precise positioning systems, can solve problems such as inability to apply, limited reliability and security, limited GPS positioning accuracy and positioning speed, etc. Simple, low-computation effect

Inactive Publication Date: 2009-03-18
PANDA ELECTRONICS GROUP +3
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Problems solved by technology

One is that the GPS positioning system is greatly affected by the weather and the environment, and cannot be used in harsh environments such as tunnels; the other is that the GPS positioning accuracy and positioning speed are limited. At present, the GPS positioning accuracy is about 10 meters, and there are obvious positioning errors. Vehicle positioning on expressways and other application scenarios that require high positioning accuracy and positioning speed cannot be applied; third, GPS mainly relies on satellite technology for positioning, and its reliability and safety are limited

Method used

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  • Method for implementing self-organizing network positioning system based on time division-synchronous code division multiple access
  • Method for implementing self-organizing network positioning system based on time division-synchronous code division multiple access
  • Method for implementing self-organizing network positioning system based on time division-synchronous code division multiple access

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Embodiment Construction

[0029] The invention mainly adopts the Doppler frequency difference method to implement single-point passive fast and accurate positioning. Application scenarios such as figure 2 shown.

[0030] Passive positioning technology is a technology in which the positioning device itself does not actively transmit signals. It has strong concealment and has a large number of military applications. The single-station passive positioning technology is to use an observation platform to passively locate the target, and use a single moving observation station to continuously measure the radiation station. Obtain positioning data for radiation station targets.

[0031] According to the principle of kinematics, the relative motion velocity between the observation station and the target radiation station is decomposed, and the Doppler frequency change rate information is extracted from the tangential velocity, supplemented by azimuth information, which can realize a single ranging positioni...

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Abstract

The invention relates to a method for realizing self-organizing network positioning system based on time division synchronization code division multiple access, for quickly and accurately positioning a mobile self-organizing network, based on TD-SCDMA (time division synchronization code division multiple access) aerial interface, which utilizes mobile nodes as an observation platform and the fixed nodes of known positions as radiation stations. According to the Doppler shift relative to the radiation stations, analyzed by the mobile nodes and the motion speed measured by the sensors of the nodes, the speeds of the radiation stations relative to the mobile nodes are decomposed into radial speeds and tangent speeds, the positions of the mobile nodes can be calculated by kinematics theory to realize accurate location.

Description

technical field [0001] The present invention utilizes the characteristics of the TD-SCDMA (Time Division Synchronous Code Division Multiple Access) air interface, implements single-point passive positioning by using the Doppler frequency difference principle, and constructs a fast and accurate positioning system based on TD-SCDMA mobile ad hoc network . Background technique [0002] TD-SCDMA, as the third-generation mobile communication standard proposed by China, uses advanced technologies such as time division duplexing, uplink synchronization, smart antennas, joint detection and relay handover, but still has the shortcomings of cellular coverage blind spots and insufficient service types. The mobile self-organizing network has the characteristics of no center and self-organization. Using the TD-SCDMA air interface to build a mobile ad hoc network can not only take advantage of the characteristics of TD-SCDMA time-division duplexing, without making major changes to the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/02H04L12/28
Inventor 朱立锋许波沈连丰牟中平胡静宋铁成倪铭
Owner PANDA ELECTRONICS GROUP
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