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Foundation radar and aerial mobile platform radar real-time error registering method

A mobile platform radar and ground-based radar technology, applied in the field of radar network system error registration, can solve the problems of not considering the influence of radar system attitude angle error coupling, etc., to reduce the amount of calculation, reduce the dimension of the matrix, and improve the calculation speed Effect

Active Publication Date: 2015-03-18
灌南海霞花卉有限公司
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Problems solved by technology

But this method does not consider the coupling effect of radar system error and attitude angle error
Helmick uses Kalman filter technology to realize the simultaneous estimation of radar networking system error and attitude angle error, but this method is only applicable to the situation where the distance between radars is relatively short
Moreover, the above two methods can only estimate the relative system error and the relative attitude angle deviation

Method used

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  • Foundation radar and aerial mobile platform radar real-time error registering method
  • Foundation radar and aerial mobile platform radar real-time error registering method
  • Foundation radar and aerial mobile platform radar real-time error registering method

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Embodiment Construction

[0038] Step (1). Measure the target by radar i (i=1 ground-based radar, i=2 aerial mobile platform radar) at time k: slant range , Azimuth ,Pitch angle And local geographic coordinates: latitude ,longitude ,height And the attitude angle measurement of the platform: yaw angle , Roll angle , Pitch angle Report to the Fusion Center.

[0039] Step (2). The fusion center processes the reported information to obtain an equivalent measurement equation. The specific method is:

[0040] a. Transformation of radar polar coordinate measurement to rectangular coordinate system

[0041]

[0042] among them, Is the value of radar i measured in the Cartesian coordinate system at time k.

[0043] b. Transform the radar rectangular coordinate system to the platform northeast sky (ENU) coordinate system

[0044]

[0045] among them, Is the value measured by radar i at time k in the northeast sky coordinate system of the platform, Is the rotation matrix of the local Cartesian coordinate syste...

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Abstract

The invention discloses a foundation radar and aerial mobile platform radar real-time error registering method. The real-time error registering method includes the steps of reporting the measurement of radars on objects, local geographical coordinates of the radars and the measurement on an attitude angle of a platform to a fusion center, obtaining an equivalent measurement equation, then carrying out sequential least square initialization and using a sequential least square method to estimate system errors of each radar and the attitude angle deviation of the platform, and finally using the estimated system errors and the estimated attitude angle deviation of the platform to compensate the system errors of the radars and the attitude angle deviation of the platform so as to achieve error registering on radar networking. Through reasonable modeling, the foundation radar and aerial mobile platform radar real-time error registering method obtains the absolute system error estimation on each radar, and the foundation radar and aerial mobile platform radar real-time error registering method is applicable to the situation that the distance between the radars is long.

Description

Technical field [0001] The invention belongs to the technical field of radar network system error registration, and relates to a real-time error registration method between ground-based radar and air mobile platform radar, and is suitable for networking occasions of ground-based radar and air mobile radar with platform attitude angle deviation. Background technique [0002] Ground-based radar and air mobile platform radar are a typical radar networking mode. By complementing the advantages of ground-based radar and air mobile radar, better performance than single radar can be obtained. However, due to the existence of radar system errors and platform attitude angle deviations, the performance of radar networking is often inferior to that of single radar. How to effectively estimate and compensate the system errors and platform attitude angle deviations of the radars in the network is the prerequisite for the advantages of the air-to-ground radar network. [0003] At present, ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/40
Inventor 左燕薛安克刘建丰刘俊郭宝峰申屠晗
Owner 灌南海霞花卉有限公司
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