Target Signal Recognition Method Based on Rotor UAV Airborne Equipment and Ground Equipment

A target signal and ground equipment technology, applied in the field of communication reconnaissance, can solve the problems of long signal processing time, short reconnaissance distance of ground communication reconnaissance equipment, long signal return time, etc.

Active Publication Date: 2021-04-27
36TH RES INST OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the embodiment of the present invention aims to provide a target signal recognition method based on the rotorcraft on-board equipment and ground equipment, to solve the problem that the air communication reconnaissance equipment in the prior art is not suitable for long-term reconnaissance and signal return time. Longer, the ground communication reconnaissance equipment has a short reconnaissance distance and a long signal processing time

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  • Target Signal Recognition Method Based on Rotor UAV Airborne Equipment and Ground Equipment
  • Target Signal Recognition Method Based on Rotor UAV Airborne Equipment and Ground Equipment
  • Target Signal Recognition Method Based on Rotor UAV Airborne Equipment and Ground Equipment

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Embodiment 1

[0067] A specific embodiment of the present invention discloses a target signal recognition method based on rotorcraft equipment and ground equipment, such as figure 1 shown, including the following steps:

[0068] S1. The rotor UAV on-board equipment receives an external real-time target signal, identifies the frequency band of the target signal, performs corresponding optimization processing on the target signal according to the identified frequency band, and then amplifies the obtained optimized signal and forwards it as a forwarding signal to ground equipment;

[0069] S2. The ground equipment extracts the eigenvectors of the received forwarded signals, and performs double correlation calculations on the obtained eigenvectors according to the mapping relationship between the signals stored in the database and the target eigenvectors, to obtain the signal type and carrier target, and complete the target signal identify.

[0070] Optionally, the signal type is a frequency ...

Embodiment 2

[0074] Improvements are made on the basis of Embodiment 1. In step S1, identifying the frequency band of the target signal further includes the following steps:

[0075] S11. Transforming the external real-time target signal from the time threshold to the frequency domain by a fast Fourier transform method;

[0076] S12. Identify the frequency band of the external real-time target signal by using the obtained frequency domain result.

[0077] Preferably, the optimization processing of the target signal according to the identification frequency band described in step S1 further includes the following steps (two modes):

[0078] S13. The first mode is that when the frequency band of the target signal and the forwarding frequency band forwarded to the ground equipment belong to the same frequency band, the target signal is first converted to obtain the frequency band signal to be forwarded, and then the same-frequency signal cancellation method is used to eliminate the above-ment...

Embodiment 3

[0127] The present invention also provides a target signal identification system corresponding to the method described in Embodiment 1, such as figure 2 As shown, it includes rotorcraft airborne equipment and ground equipment. The rotor UAV on-board equipment can reach the sky near the target, and transmit the external real-time target signal sent by the other party to the ground equipment through WiFi.

[0128] The rotor UAV on-board equipment is used to receive external real-time target signals, identify the frequency band of the target signal, perform corresponding optimization processing on the target signal according to the identification frequency band, and then amplify the obtained optimized processing signal and forward it as a forwarding signal to ground equipment.

[0129] The ground equipment is used to extract the eigenvectors of the received forwarded signals, and perform double correlation calculations on the obtained eigenvectors according to the mapping relat...

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Abstract

The present invention relates to a target signal identification method based on rotorcraft equipment and ground equipment, belongs to the technical field of communication reconnaissance, and solves the problem that the air communication reconnaissance equipment in the prior art is not suitable for long-term reconnaissance, the signal return time is long, and the ground Communication reconnaissance equipment has the problem of short reconnaissance distance and long signal processing time. The method includes: the rotor UAV on-board equipment receives an external real-time target signal, identifies the frequency band of the target signal, performs corresponding optimization processing on the target signal according to the identified frequency band, and then amplifies the obtained optimized signal and forwards it to the ground as a forwarding signal Equipment: The ground equipment extracts the eigenvector of the forwarded signal, and performs double correlation calculation on the obtained eigenvector according to the mapping relationship between the signal and the target eigenvector stored in the database, and then obtains the signal type and carrier target, and completes the target signal identification. The method applies double correlation operation recognition technology, and the target recognition accuracy is high and reliable.

Description

technical field [0001] The invention relates to the technical field of communication reconnaissance, in particular to a method for identifying target signals based on rotorcraft-mounted equipment and ground equipment. Background technique [0002] The principle of communication reconnaissance technology is to obtain the law of the enemy's communication activities through the detection, identification and analysis of the communication signals of the non-cooperating party, and then grasp the state of the enemy's communication system and determine the location of the target radiation source. According to different loading platforms, communication reconnaissance equipment can be divided into different loading forms such as fixed station, vehicle-mounted, ship-borne and airborne. The working principle of each loading platform is basically the same, but different loading forms are selected according to the mission environment. [0003] At present, air communication reconnaissance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04B1/40H04B1/04
CPCH04B1/04H04B1/40H04B7/18504H04B7/18506H04B2001/0408H04B2001/0416
Inventor 杨卓李敬德何伟
Owner 36TH RES INST OF CETC
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