A super-resolution high-precision low-altitude angle measurement method based on fast storage technology

A fast storage and super-resolution technology, applied in direction finders using radio waves, radio wave measurement systems, radio wave direction/deviation determination systems, etc., can solve problems such as extremely high processing capacity and large transmission bandwidth, and achieve solutions Large amount of calculation, effect of reducing the amount of input data

CN107329128BActive Publication Date: 2019-09-24WUHAN BINHU ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-09-24

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Abstract

The invention belongs to the technical field of low-altitude angle measurement engineering, and especially relates to a super-resolution high-precision low-altitude angle measurement method based on the rapid storage technology. The method comprises the steps: carrying out the pulse compression processing of the received radar echo data, carrying out one-to-two processing, carrying out the conventional processing of a radar echo pulse voltage signal, transmitting the processed signal to a rear-end terminal monitoring module, enabling the terminal monitoring module to give the distance and azimuth information of a detection target, and finding the corresponding distance unit data in an angle measurement processing module for angle measurement processing according to the distance and azimuth information of the detection target. According to the invention, the method solves a problem that a conventional super-resolution low-altitude angle measurement technology needs big transmission bandwidth and extremely strong processing capability, and needs to meet the requirements of the real-time performance of a radar. The method is better in popularization capability, and can be widely used for the fields of aviation detection and radar application.
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Description

technical field

[0001] The invention belongs to the technical field of low-altitude angle measurement engineering, in particular to a super-resolution and high-precision low-altitude angle measurement method based on fast storage technology. Background technique

[0002] Due to the ground or sea reflection, the radar reflection signal and the direct signal enter the radar antenna together (after vector addition), which causes the echo signal to change in amplitude and phase, and the error caused is called multipath error. This phenomenon is It is called radar multipath effect (hereinafter referred to as multipath effect). The multipath effect causes changes in the amplitude and phase of the radar received signal, resulting in measurement and tracking errors, which may lead to loss of tracking targets in severe cases. Therefore, in order to improve the radar's measurement and tracking accuracy of low-altitude or ultra-low-altitude targets, it is necessary to solve the proble...

Examples

Embodiment Construction

[0022] The sequence of the present invention includes the step of splitting the received radar echo data into two after pulse compression processing, sending the radar echo pulse pressure signal to the back-end terminal monitoring module after conventional processing, and the terminal monitoring module giving the detection target. In the step of distance and orientation information, according to the distance and orientation information of the detected target, the corresponding distance unit data is found in the angle measurement processing module to perform the angle measurement processing step.

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] A specific embodiment of the present invention takes a certain type of phased array radar as an example, including the following steps:

[0025] Step 1. Perform pulse compression processing on the received radar echo data and then split them in...