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Single station location method of moving target based on quadratic programming

A moving target and secondary programming technology, applied in positioning, special data processing applications, measuring devices, etc., can solve problems such as the accuracy and infeasibility of the phase difference change rate, which is difficult to estimate, and achieve the effect of maintaining accuracy

Inactive Publication Date: 2017-01-11
西安电子科技大学昆山创新研究院 +2
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Problems solved by technology

For example, in the positioning based on the phase difference change rate, since the Kalman filter needs to be used to calculate the phase difference change rate, if the captured sample size is small, then the phase difference change rate is difficult to estimate accurately
In the positioning based on Doppler change rate, due to the need to calculate very fine Doppler frequency shift, for complex electromagnetic environments, it is necessary to store a large number of raw data samples, which is sometimes not feasible on hardware
And all the previous single station positioning algorithms are basically only for the situation that the target is stationary

Method used

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  • Single station location method of moving target based on quadratic programming
  • Single station location method of moving target based on quadratic programming
  • Single station location method of moving target based on quadratic programming

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, this embodiment will further describe the implementation of the present invention in detail with reference to the accompanying drawings. It should be noted that this embodiment is implemented on the premise of the technical solution of the present invention, and the detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0026] Step 1, the motion observation platform intercepts the signal of the moving target;

[0027] Step 2, the moving observation platform performs direction of arrival (DoA) estimation on the moving target signal obtained on its own moving track, and obtains the DoA discontinuous measurement value of the moving target:

[0028] Such as figure 1 shown, t i ,i=0,1,2,...,M-1 indicates the moment when the platform intercepts the target signal and perfor...

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Abstract

The invention discloses a moving target single-station positioning technology based on quadratic programming. The moving target single-station positioning technology includes that target signals obtained on the own movement trail of a movement observing platform are estimated in the direction of arrival (DoA) to obtain DoA discontinuous measurement values of a moving target; by using the obtained discontinuous measurement values, a linear movement model of a target subsection is built, and an algorithm based on quadratic programming is constructed to position the moving target and estimate the movement trail of the moving target. It can be achieved that under the conditions of small sample catch, single-station positioning still can be performed on the moving target by using the single-station positioning technology, and accuracy of positioning results is kept.

Description

technical field [0001] The invention relates to a single-station positioning technology, in particular to a certain single-station positioning system, which can be used for single-station positioning of small sample size and moving targets. Background technique [0002] At present, there are many positioning methods: time difference (TDOA) passive positioning, frequency difference (FDOA) passive positioning, direction finding (DF) positioning, phase change rate joint positioning, hybrid positioning, including direction finding / time difference joint positioning , direction finding / phase change rate joint positioning, direction finding / frequency measuring joint positioning, time difference / frequency difference joint positioning (TDOA / FDOA), etc. For a specific positioning technology system, it can be subdivided according to the implementation method. For example, direction finding positioning, according to the realization method of direction finding positioning, can also be s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00G01S5/00
Inventor 鲍丹武斌秦国栋蔡晶晶李鹏吴日恒张腾
Owner 西安电子科技大学昆山创新研究院
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