Measurement data fusion method for two-dimensional radar and infrared sensors at different sites

A technology of infrared sensor and synthesis method, applied in instruments, measurement devices, radio wave measurement systems, etc., can solve problems such as measurement dimension mismatch, heterogeneous data detection time asynchrony, data rate inconsistency, etc.

Active Publication Date: 2014-05-14
NO 709 RES INST OF CHINA SHIPBUILDING IND CORP
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AI Technical Summary

Problems solved by technology

Due to the asynchronous detection time of heterogeneous data of two-coordinate radar and infrared sensor, the coordinates are not uniform, the data rate is inconsis

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  • Measurement data fusion method for two-dimensional radar and infrared sensors at different sites
  • Measurement data fusion method for two-dimensional radar and infrared sensors at different sites
  • Measurement data fusion method for two-dimensional radar and infrared sensors at different sites

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Embodiment Construction

[0057] Below in conjunction with accompanying drawing and example the present invention is described in further detail.

[0058] The invention provides a method for synthesizing measurement data of different platforms 2-dimensional radar and infrared sensors. combine figure 1 The algorithm flow chart, the specific implementation steps are as follows:

[0059] 1. Receive information about successful measurement target pairs:

[0060] It is assumed that the 2D radar 1 and the infrared sensor 2 respectively detect an air target in the surveillance area. In this example, the heterogeneous sensor data synthesis mainly receives two types of information: one is the position information of the sensor platform; the other is the measurement target information of the heterogeneous sensor.

[0061] Assuming that the 2-dimensional radar 1 measures the position vector of the target point with [r, β] T Indicates that r and β represent the distance and azimuth of the 2D radar measurement ...

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Abstract

A measurement data fusion method for a two-dimensional radar and infrared sensors at different sites. The method includes the following steps that: step 1, successful measurement target pair information is received; second step, a target observation equation is constructed through transformation; third step, state vectors that satisfy Markov estimation conditions are constructed according to measurement azimuth angle characteristics; fourth step, Markov estimation is performed on a target state vector X; step five, error covariance calculation is performed on the target state vector X; and step six, state vectors on a Z axis and the variance of the state vectors are calculated. The measurement data fusion method is advantageous in simple operation. According to the measurement data fusion method of the invention, the target observation equation is constructed through combining the measurement data of the two-dimensional radar and the infrared sensors at different time points; the state vectors and the covariance thereof of the target observation equation are estimated according to the Markov estimation principle; and therefore, complex time-space alignment calculation of vacant-dimension data can be avoided. The method is easy to implement and apply to engineering practice, and has a target state estimation function as well as fusion and filtering functions, and has excellent real-time performance and high fusion accuracy.

Description

technical field [0001] The invention belongs to the technical field of data fusion, and specifically relates to a method for synthesizing data of 2-dimensional radars and infrared sensors on different platforms. The time and space alignment of heterogeneous sensor data is performed separately, thereby avoiding the complex time-space alignment / coordinate conversion of dimensionless data and the principle error introduced thereby. Background technique [0002] The detection capabilities of various types of sensors have their own advantages and certain limitations. In order to achieve comprehensive, complete and stable battlefield situation awareness, it is necessary to disperse and set various types of sensors in the combat space to form a sensor network. These sensors include warning radar, search radar, tracking radar, infrared, television, laser, electronic warfare and other detection equipment, and use data fusion technology to perform data fusion on the target detection / t...

Claims

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Application Information

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IPC IPC(8): G01S7/02G01S13/58
CPCG01S13/86
Inventor 吴汉宝杨志祥陈世友王鹏
Owner NO 709 RES INST OF CHINA SHIPBUILDING IND CORP
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