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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 networking system error registration, can solve the problem of not considering the coupling effect of the attitude angle error of the radar system, and achieve the goal of reducing the amount of calculation, reducing the dimension of the matrix, and improving the calculation speed. Effect

Active Publication Date: 2013-10-09
JIANGSU YUGUAN MODERN AGRI S AND T CO LTD
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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 air mobile platform radar) at time k: slant distance , azimuth ,Pitch angle and local geographic coordinates: latitude ,longitude ,high 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. Radar polar coordinate measurement conversion to Cartesian coordinate system

[0041]

[0042] in, is the value measured by radar i in Cartesian coordinate system at time k.

[0043] b. Convert the radar Cartesian coordinate system to the Northeast Sky (ENU) coordinate system of the platform

[0044]

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

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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 error registration of radar networking systems, and relates to a real-time error registration method for ground-based radars and aerial mobile platform radars, which is suitable for networking occasions of ground-based radars and air mobile radars with platform attitude angle deviations. 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 a single radar can be obtained. However, due to the existence of radar system errors and platform attitude angle deviations, the performance of the radar network is often not as good as that of a single radar. How to effectively estimate and compensate the system error of each radar in the network and the attitude angle deviation of the platform is the premise of giving full play to the advantages of the air-...

Claims

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Application Information

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IPC IPC(8): G01S7/40
Inventor 左燕薛安克刘建丰刘俊郭宝峰申屠晗
Owner JIANGSU YUGUAN MODERN AGRI S AND T CO LTD
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