Same-frequency interference inhibiting module and same-frequency interference inhibiting method based on statistical data detection
A co-frequency interference and statistical data technology, applied in the field of co-frequency interference suppression modules, can solve the problems of radar anti-jamming ability decline, influence radar operating distance, radar signal-to-noise ratio decrease, etc., to ensure the operating distance and communication quality, prevent Collision, safety-enhancing effects
Active Publication Date: 2013-05-01
CHENGDUSCEON TECH
View PDF1 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The influence of the same frequency interference on the continuous wave navigation radar mainly includes the following aspects: (1) When the number of the same type of radars on the ship is more than three at the same time, the radar display screen is basically occupied by the interference, and the real target echo is submerged in the interference signal (2) If the same frequency interference appears in the tracking wave gate, it will lead to the loss of the tracking target; (3) The anti-jamming ability of the radar will drop sharply
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0034] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0035] Such as figure 1 As shown, the co-channel interference suppression module based on statistical data detection includes a random access memory RAM, a subtractor, an absolute value circuit, a normalization circuit, a comparator, a command analysis circuit and a co-channel interference suppression circuit, and the command analysis circuit The input is connected to the same-frequency interference suppression command signal output by the external display device, the output of the command analysis circuit is connected to an input terminal of the comparator; the output of the random access memory RAM is respectively connected to the subtractor and the maximum value circuit, and the other circuit of the subtractor The input is connected to t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a same-frequency interference inhibiting module and a same-frequency interference inhibiting method based on statistical data detection. A command parsing circuit is connected with a comparator, the output of a random access memory (RAM) is respectively connected with a subtractor and a maximal value circuit, outputs of an absolute value circuit and the maximal value circuit are connected with a normalization circuit, the normalization circuit is connected with the comparator, the comparator is connected with a same-frequency interference inhibiting circuit, and the output of the same-frequency interference inhibiting circuit is respectively connected with the RAM and a subsequent signal processing unit. The method comprises the following steps of recognizing an abnormal signal, normalizing a different signal, recognizing and locating an interference abnormal signal and inhibiting the interference. According to the same-frequency interference inhibiting module and the same-frequency interference inhibiting method, the abnormal signal caused by the interference at an interference moment is processed, and the abnormal signal at the interference moment is basically eliminated through an echo period; and the inhibiting effect is good, the radar signal-to-noise ratio is high, the acting distance and the communication quality of the radar can be guaranteed, different dangerous obstacles can be effectively avoided, and the driving safety of ships can be improved.
Description
technical field [0001] The invention relates to a same-frequency interference suppression module and a same-frequency interference suppression method based on statistical data detection. Background technique [0002] Since the United States officially launched microwave radar in 1943, microwave radar has been widely used in the navigation field of ships. The radar that continuously emits electromagnetic waves is called continuous wave radar. According to the form of the transmitted signal, continuous wave radar is divided into non-modulated single-frequency or Multi-frequency continuous wave radar and frequency modulated continuous wave radar. Non-modulated single-frequency continuous wave radar can measure the speed of targets with any moving speed within a considerable distance range, while pulse radar can only achieve this performance by using complex technology. Continuous wave radar can easily distinguish active targets and is suitable for detecting single active target...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36
Inventor 何奎姚元飞钱延军
Owner CHENGDUSCEON TECH