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Method for realizing high precision angle measurement technique based on amplitude single pulse

An implementation method and high-precision technology, which is applied in the direction of radio wave measurement systems and instruments, can solve the problems of finding the mean deviation, error, and large correction direction, so as to improve detection ability, improve data quality, enhance reliability and stability sexual effect

Active Publication Date: 2017-07-28
四川九洲空管科技有限责任公司
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Problems solved by technology

[0008] When the sign bit is inaccurate or the channel amplitude sampling is abnormal, there will be a large error in the corrected azimuth, and there will be a large deviation in the mean value

Method used

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  • Method for realizing high precision angle measurement technique based on amplitude single pulse
  • Method for realizing high precision angle measurement technique based on amplitude single pulse
  • Method for realizing high precision angle measurement technique based on amplitude single pulse

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specific Embodiment 1

[0034] Specific embodiment 1, a kind of high-precision angle measurement technology implementation method based on amplitude single pulse, the specific method steps are:

[0035] Step 1. Receive and save the original data of the detection target in each query cycle in real time, and judge whether the original data of the target meets the target processing activation time criterion. If not, treat the unsatisfied target as a potential target, and continue to save and collect other Response data; if yes, go to the next step to filter the raw data of the target that meets the target processing activation time criterion;

[0036] Step 2. Get the sum and difference amplitude value from the original data of the target, calculate the amplitude fluctuation of each inquiry cycle through the sum and difference amplitude value, and filter all the original data of the target; use the filtered original data as the effective original data of the target Data, enter the next step, so as to rea...

specific Embodiment 2

[0052] On the basis of specific embodiment 1, A=12, B=40, C=A / 2=6.

specific Embodiment 3

[0054] In said step 4, the threshold value of the cumulative number of times that does not have the characteristic of increasing or decreasing in sequence is set. In the upward trend, if the difference between the current original data and the difference value of the target is different from other original data and the difference value of the target Compared with the difference, if the accumulative number of times that does not have the characteristic of sequential increase is greater than or equal to the threshold value of the cumulative number of times that does not have the characteristic of sequential increase, the current original data of the target is regarded as abnormal data and eliminated; in a downward trend, if the target Compared with the difference between the current original data and the difference value of the target and other original data and the difference value of the target, the cumulative number of times that does not have the descending characteristic is g...

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Abstract

The invention provides a method for realizing the high precision angle measurement technique based on the amplitude single pulse. According to the target processing activation time criterion, the adjacent two response signal amplitude fluctuation correlation criterion, the sign bit revision criterion and the equal amplitude value rejection criterion, original data of the target are screened or revised in layers, and then the azimuth offset is added to or subtracted from the azimuth pulse count by the sign bit information of the original data of the target to obtain the correction azimuth; and the mean of correction azimuths of multiple responses is calculated to obtain a secondary radar plot azimuth. In the complex electromagnetic wave environment, the method can use the multiple judgment criteria to timely and accurately determine whether the original data of the detection target are true and reasonable or not, without increasing the hardware cost but greatly improving the detection capability of the air target affected by various disturbances. And according to the authenticity, the original data of the target is subjected to screening, normalized adjustment and cohesion, so as to improve the data quality of the detection target, and to enhance the reliability and stability of the target monitoring system.

Description

technical field [0001] The invention relates to the field of angle measurement of an air traffic control secondary radar target, in particular to a method for realizing a high-precision angle measurement technology based on an amplitude monopulse. Background technique [0002] With the rapid increase of aviation traffic, especially at airports, the density of flying targets in important air routes and air routes is increasing, and the traffic control system in military / civil aviation is facing heavy tasks, especially the system throughput and the accuracy of target detection and tracking. The performance index requirements are getting higher and higher; the traditional military / civil aviation traffic control system has low target detection and tracking accuracy in the back-end data processing, resulting in deviations in the calculation of the target distance, altitude and azimuth. It will affect the effect of track processing, and sometimes it is even impossible to complete ...

Claims

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 张中南冯涛吴兵唐斯亮
Owner 四川九洲空管科技有限责任公司
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