Signal processing method based on low-cost security radar

A signal processing, low-cost technology, applied in the field of target detection of civilian radar, can solve the problems of many black flying targets, high cost, hidden dangers, etc., achieve the effect of simple operation steps, reduce operation cost, and meet the requirements of use

CN111736126APending Publication Date: 2020-10-02XIDIAN UNIV
0 Cites 7 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-10-02

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a signal processing method based on a low-cost security radar. The method comprises the following steps: carrying out channel equalization on all signal channels of a digital array radar; transmitting digital beam forming and receiving digital beam forming; performing frequency domain pulse compression processing on the received signal; carrying out large-point multi-pulseaccumulation by adopting a moving target detection method; and carrying out target detection by adopting a maximum selection constant false alarm detection method to obtain a target trace point. According to the method, the algorithm of the low-power security radar is low in cost, a complete radar signal processing flow is realized on the low-power radar, the accuracy is high, the operation stepsare simple, the real-time performance is good, and the operation cost of low-power radar signal processing is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of civilian security radar, in particular to a signal processing method based on low-cost security radar, which is suitable for target detection of low-cost, low-power, and slow-speed civilian radar. Background technique

[0002] With the rise of the UAV industry in recent years, micro-UAVs have been used in many fields such as agricultural production, power track inspection, search and rescue operations, express transportation, and film and television photography. Due to the huge demand for drones, sales of drones are booming. For the blowout development of UAVs, there are more and more black flying targets, which are difficult to detect and control in time, thus bringing huge hidden dangers.

[0003] Most of the low-power security radars that have been successfully developed are mostly from military applications, and the cost is relatively high, and the volume and weight are large, making it inconvenient ...

Examples

Embodiment Construction

[0069] Embodiments of the present invention will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention.

[0070] refer to figure 1 , a kind of signal processing method based on low-cost security radar provided by the present invention, comprises the following steps:

[0071] Step 1, select the low-cost security radar as the digital array radar, and perform channel equalization on all signal channels of the digital array radar, so that the amplitude and phase of each signal channel are the same, and obtain the corrected digital array radar;

[0072] Specifically, in a digital array radar, the amplitude-frequency characteristics and phase-frequency characteristics of each array element cannot be completely consistent, and the amplitude-phase difference between array elements wi...