Mean and variance analysis method for estimation errors of target positions of passive sensors

A passive sensor and target position technology, applied in the direction of instruments, positioning, measuring devices, etc., can solve the problem of not being able to meet the number of experiments

Active Publication Date: 2014-12-24
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Problems solved by technology

However, in engineering practice, due to various constraints, the number of experiments often cannot be satisfied.

Method used

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  • Mean and variance analysis method for estimation errors of target positions of passive sensors
  • Mean and variance analysis method for estimation errors of target positions of passive sensors
  • Mean and variance analysis method for estimation errors of target positions of passive sensors

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Embodiment Construction

[0034] Since the essence of the multi-source passive sensor target position estimation method is to locate the target according to the principle of the corners of the triangle, two or more passive sensor target azimuth measurements are required to estimate the target position. When target monitoring is performed on a specific monitoring area, the position and quantity of sensors are determined by the mean variance calculation and analysis method of the present invention, so as to achieve the optimal estimation of the target position in the area.

[0035] First, the monitoring area is divided into grids to form a grid matrix, and the center coordinates of each grid in the grid matrix are determined. According to the needs of engineering practice, the length of the target position estimation accuracy index is used as the grid side length; secondly, the selection The preset position and quantity of sensor measurement stations, as a set of sensor deployment scheme, set the distance...

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Abstract

The invention relates to a mean and variance analysis method for estimation errors of the target positions of passive sensors. According to target azimuth measurement values of multi-station passive sensors, target position estimation is conducted according to the least square method, and position estimation result errors comprise a deviation mean and a root-mean-square deviation. According to the mean and variance analysis method for the estimation errors of the target positions of the passive sensors, in terms of the problem that only azimuth measurement is adopted for estimation error analysis of the target positions of multi-source passive sensors, the deviation mean of estimated values of the target positions is used for describing the errors generated in a target position estimation method; the error root-mean-square deviation of the estimation values of the target positions is used for describing the estimation accuracy of the target positions. The mean and variance analysis method for the estimation errors of the target positions of the passive sensors has the advantages that the expression of the deviation mean and the expression of the error root-mean-square deviation are mathematical analytic expressions; the estimation errors of the target positions are obtained through formula computing, and the number, positions and measurement accuracy of the sensors are not limited; the method is simple, and results are accurate; the method is beneficial to engineering application.

Description

technical field [0001] The invention relates to a passive sensor information processing method, in particular to a passive sensor target position estimation error mean value variance analysis method. Background technique [0002] Aiming at the problem of target position estimation error analysis of multi-source passive sensors with only azimuth measurement, the current method is to use simulation experiments to obtain a large number of sampling data, and statistical calculation to obtain the mean value and variance of the error. The number of experiments determines the accuracy of the statistical mean and variance. The more experiments, the closer the statistical mean and variance are to the true values. However, in engineering practice, due to various constraints, the number of experiments often cannot be satisfied. Contents of the invention [0003] Purpose of the invention: The present invention provides a method for analyzing the mean value and variance of the target ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/00G01C21/00
CPCG01C21/00G01S5/00
Inventor 王晓璇于永生裘海蓉刁联旺张桂林徐欣
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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