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A Seeker Tracking Method

A seeker and window function technology, which is applied to the reflection/re-radiation of radio waves, the use of re-radiation, measurement devices, etc. Improve the effect of effective detection and stable tracking of real targets, stable interception and tracking

Active Publication Date: 2017-01-18
江南机电设计研究所 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

from image 3 It can be seen that the two impulses are caused by the rising and falling edges of the discontinuous wave gate, which leads to the deterioration of the echo signal quality and the failure to intercept the target normally.

Method used

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Embodiment Construction

[0030] Hereinafter, the content of the present invention will be further described in detail through the form of embodiments.

[0031] Such as Figure 1 to Figure 3 As shown, in the reception processing process of the existing seeker echo receiver, after the echo signal enters the echo channel, it is amplified and filtered by the low-noise high-frequency amplifying filter 11 in the front stage 1 of the echo receiver, and then The echo Doppler frequency f currently tracked between the mixer 12 and the seeker d After mixing, it enters the intermediate frequency processing unit 2, passes through the narrowband filter 21 and the automatic gain control (AGC) amplifier 22, and sends it to the digital signal processor to detect and track the target Doppler frequency.

[0032] Under the condition of sufficient continuous irradiation time, the extraction and detection of the echo signal can be performed after the impulse response generated by the echo receiving channel under the impulse of t...

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Abstract

The invention provides a seeker tracking method. According to the method, when echo signal processing is carried out, a flexible adjustable clutter wall is set according to the relative motion state of a target, and clutter signals are suppressed; before the echo signals enter a narrowband filter, a window function circuit is added for modulation, the rising edge and the falling edge of signals slow down, and the purpose that the ability of effectively detecting and stably tracking the target flying at a low altitude by the semi-active seeker with ultra-short continuous radiation time is improved can be achieved.

Description

Technical field [0001] The invention belongs to the field of semi-active radar seeker design, and particularly relates to a method for detecting and tracking target signals by a semi-active radar seeker in a strong clutter environment under the condition of ultra-short continuous irradiation time. Background technique [0002] The semi-active radar seeker is a kind of on-board detection equipment that detects and tracks the target by receiving the ground (sea) surface radar illumination signal reflected by the target. When detecting low-altitude flying targets, the radar illumination signal will illuminate A large number of diffuse reflection signals are formed behind the ground (sea) and received by the seeker. These diffuse reflection signals are clutter signals. When the seeker is tracking a low-altitude flying target, in a clutter background environment, it can still detect the ratio of the maximum tolerable clutter power to the target echo power according to the given detect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/66G01S7/36
CPCG01S7/354G01S13/66
Inventor 田仁强唐志刚张淑琴谢洪泽桑隽永蔡猛辛增献李世平王诗琴赵丹
Owner 江南机电设计研究所