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Non-cooperative radar radiation source positioning method based on nonlinear least squares

A least-squares, non-linear technology, applied in the field of non-cooperative radar radiation source positioning, can solve the problems of low probability of interception, difficulty in ensuring simultaneous and accurate interception by the receiving device, and inability to accurately estimate the position of the target radiation source. Achieved effect

Active Publication Date: 2012-12-12
NAVAL AVIATION UNIV
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Problems solved by technology

If multiple receivers cannot obtain measurements from the same transmit pulse from the same radar emitter, the position of the target emitter cannot be accurately estimated
However, in practical applications, since the layout of multiple receiving devices is affected by the complex te

Method used

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  • Non-cooperative radar radiation source positioning method based on nonlinear least squares
  • Non-cooperative radar radiation source positioning method based on nonlinear least squares
  • Non-cooperative radar radiation source positioning method based on nonlinear least squares

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] like figure 1 As shown, the non-cooperative radar emitter location system based on nonlinear least squares belongs to a multi-station passive location system. It uses N receiving devices (N≥3) distributed in space to detect non-cooperative radar radiation sources in the monitoring area of ​​interest. When the transmitting antenna of the target radiation source performs regular circular scanning or During sector scanning, the multi-station receiving device accurately measures the moment when the signal emitted by its main lobe beam reaches each receiving station, and then sends the measurement results to the information processing center;

[0026] like figure 2 As shown, the present invention provides a non-cooperative radar radiation source location method based on nonlinear least squares, and the specific implementation method includes the followin...

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Abstract

The invention discloses a non-cooperative radar radiation source positioning method based on nonlinear least squares and belongs to the technical field of passive radar target positioning. One difficulty of the existing multi-station passive positioning technology based on arrival time, arrival time difference and arrival angle is that a multi-station system needs to determine that receiving pulse signals used in measurement obtaining come from the same emitting pulse of the same radar. Therefore, the passive positioning method based on nonlinear least squares is adopted. The method is characterized in that multiple passive receiving stations are adopted to sequentially intercept time of non-cooperative radar source antenna main wave beam radiation signals to integrally estimate the specific position of an emitting source, and no prior information about non-cooperative radar radiation source antenna scanning speed is needed. The non-cooperative radar radiation source positioning method is suitable for positioning a non-cooperative radar radiation source with direction having regular circular scanning or sector scanning, and can provide guide for other active sensors or multi-station positioning systems based on other measurement.

Description

1. Technical field [0001] The invention belongs to the technical field of passive radar target positioning, in particular to a non-cooperative radar radiation source positioning technology based on nonlinear least squares. 2. Background technology [0002] At present, the technology of using one or more characteristics of non-cooperative radar emitters to passively locate them has been mature. In general, the passive positioning technology based on time difference of arrival, angle of arrival and / or Doppler frequency observation is an effective method to solve the problem of non-cooperative radar emitter positioning. Among them, the passive positioning technology based on angle of arrival is to use The arrival angles of the radiation source signals obtained by multiple angle measuring devices at different positions are used to obtain the position estimation of the target radiation source through cross-location technology. Passive positioning technology based on time differe...

Claims

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Application Information

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IPC IPC(8): G01S5/04
Inventor 张财生唐小明何友李国君宋杰
Owner NAVAL AVIATION UNIV
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