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Sea wave interference suppression method

An interference suppression and ocean wave technology, applied in the field of navigation radar research, can solve the problems of small calculation amount, high real-time performance and large calculation amount, and achieve the effect of small calculation amount and high real-time performance.

Inactive Publication Date: 2014-11-05
CHENGDUSCEON TECH
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Problems solved by technology

[0006] The invention provides a method for suppressing sea wave interference, which solves the technical problems of large amount of calculation, low real-time performance, and difficulty in meeting the requirements of radar engineering practice in the method for suppressing sea wave clutter interference in the prior art, and realizes automatic recognition Clutter, estimation of clutter interference intensity and automatic adjustment of wave clutter interference suppression degree to achieve sea wave interference suppression, and the calculation amount is small, the real-time performance is high, and the technical effect that can meet the requirements of radar engineering practice

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Embodiment 1

[0043] In Embodiment 1, a sea wave interference suppression method is provided, which is applied to a radar target detection system. Please refer to Figure 1-Figure 2 , the method includes:

[0044] S10, estimating the background clutter power of the detection unit, and obtaining an estimated value of the background clutter power of the detection unit;

[0045] S20, estimating the wave clutter autocorrelation linear feature of the reference unit sampling data s(n);

[0046]S30, estimating the wave clutter interference intensity;

[0047] S40, calculate the STC control coefficient k stc (i);

[0048] S50. Based on the estimated background clutter power value, the sea clutter interference strength, and the STC control coefficient, the radar target detection system performs an ocean wave interference suppression operation.

[0049] Wherein, in the embodiment of the present application, the estimation of the background clutter power of the detection unit specifically includes...

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Abstract

The invention discloses a sea wave interference suppression method which is applied to a radar target detection system. The method includes the steps of estimating background clutter power of a detection unit first, obtaining an estimated value of the background clutter power of the detection unit, estimating sea wave clutter self-correlation linear features of sampled data s (n) of a reference unit, estimating sea wave clutter interference intensity, calculating STC control coefficient kstc (i), and finally carrying out sea wave interference suppression operation through the radar target detection system on the basis of the estimated value of the background clutter power, the sea wave clutter interference intensity and the STC control coefficient. Sea wave interference suppression can be achieved through clutter automatic identification, clutter interference intensity estimation and sea wave clutter interference suppression degree automatic adjustment.

Description

technical field [0001] The invention relates to the field of navigation radar research, in particular to a method for suppressing ocean wave interference. Background technique [0002] Navigation radar is one of the equipment that must be installed in the navigation system of marine ships. The continuous wave navigation radar for ships is small in size, low in transmission power, easy to install, and has little harm to the human body. It can be widely used in various small and medium-sized ships; Various targets, guiding ships to follow the channel, avoiding dangerous obstacles and other functions. [0003] During the voyage of the ship, there are various clutter interferences that affect the radar, including environmental and internal noise interference, co-frequency interference, rain and snow clutter interference, and sea clutter interference, etc. Among them, the sea clutter interference is the most complex, One of the worst distractions. When a ship encounters wind an...

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Application Information

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IPC IPC(8): G01S7/36G06F19/00
CPCG01S7/2928G01S7/354
Inventor 何奎张鑫唐浩彭祥龙杨仕东
Owner CHENGDUSCEON TECH