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Terminal guidance forward-looking radar echo simulation method based on missile motion parameter

A radar echo simulation and motion parameter technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as guidance forward-looking radar echo generation

Active Publication Date: 2016-01-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the existing SAR echo generation method or the existing forward-looking radar echo model cannot be directly applied to simulate the echo generation of terminal guidance forward-looking radar

Method used

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  • Terminal guidance forward-looking radar echo simulation method based on missile motion parameter
  • Terminal guidance forward-looking radar echo simulation method based on missile motion parameter
  • Terminal guidance forward-looking radar echo simulation method based on missile motion parameter

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Embodiment Construction

[0033] The method proposed by the present invention will be further described below in conjunction with the drawings and specific embodiments.

[0034] The imaging geometric model of the terminal guidance forward-looking radar used in the specific example of the present invention is as follows figure 1 As shown, the attack target is the coordinate origin of the three-dimensional coordinates, the xoy plane is on the horizontal ground, and the z-axis is perpendicular to the horizontal ground; the radar parameters of the specific examples are shown in Table 1.

[0035] Parameters (label)

Value

Beam width (θ) (including partial sidelobes)

7°

Signal time width (T r )

2us

Signal bandwidth (B)

40MHz

Pulse repetition period (prt)

25ms

Scanning speed (ω)

60° / s

Carrier frequency (f c )

35GHz

Scanning range (-da~da)

-15°~+15°

Range sampling period (fst)

60MHz

[0036] Such as figure 2 Shown is a flow chart of the scheme of the present invention, which specifically...

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Abstract

The invention discloses a terminal guidance forward-looking radar echo simulation method based on a missile motion parameter. The method comprises the steps: changing a sampling period of a missile motion parameter into a pulse repetition period through interpolation according to a missile-borne radar parameter; setting a ground scattering point within a ground area irradiated by missile-borne radar, and obtaining the slant-range history of the scattering point according to the position information of the scattering point and the missile motion parameter; obtaining phase information of a scattering point echo distance range time domain filter and phase information of the scattering point according to the slant-range history of the scattering point and the pulse width of the radar, and constructing a scattering point echo azimuth time domain filter according to the azimuth information of the scattering point and a radar antenna direction map; obtaining echo information of the scattering point according to the scattering coefficient of the scattering point, the phase information of the scattering point, the scattering point echo distance range time domain filter and the scattering point echo azimuth time domain filter, and obtaining echo information of a whole radar irradiation scene by means of a time domain coherent superposition method.

Description

Technical field [0001] The invention belongs to the technical field of radar signal processing, and in particular relates to a terminal guidance forward looking radar echo simulation method. Background technique [0002] When the end of the missile's flight is close to the target, the missile is in a dive state, and the real-time information about the position of the target and the surrounding environment of the target is obtained in real time, which plays a particularly important role in accurately striking the target. The traditional side-viewing single-base SAR and oblique forward-looking DBS technology can not image the front of the missile. However, the azimuth echo signal of the forward-looking radar is the result of the convolution of the target scattering characteristics and the antenna pattern. Deconvolute the echo signal to restore the azimuth and angle information of the target. In the distance, the high resolution of the target distance dimension is achieved through t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 黄钰林周小军王月任建宇张永超杨建宇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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