CN220289839U

CN220289839U - Signal processing system for DRFM (digital radio frequency modulation) jammer

Info

Publication number: CN220289839U
Application number: CN202320342316.3U
Authority: CN
Inventors: 孙嘉; 刘恒良; 蒲德胜
Original assignee: Hangzhou Jianpu Information Technology Co ltd
Current assignee: Hangzhou Jianpu Information Technology Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2024-01-02
Anticipated expiration: 2033-02-28

Abstract

The utility model relates to a signal processing system for a DRFM (digital radio frequency modulation) jammer, which comprises a direction finding analysis processor, a frequency finding analysis processor, an A/D (analog to digital) module, a DRFM memory, a central processing unit, a D/A module, a beam conversion switch, a clock module, a Rotmann lens, a power amplifier, a first transmitting antenna, a signal acquisition module and an interference data memory, wherein the output ends of the direction finding analysis processor and the frequency finding analysis processor are respectively and electrically connected with the DRFM memory through the A/D module, the central processing unit is electrically connected with the DRFM memory, the central processing unit is electrically connected with the beam conversion switch through the D/A module, the signal acquisition module is electrically connected with the interference data memory, and the interference data memory is electrically connected with the DRFM memory through the A/D module; the design of the signal acquisition module and the interference data memory ensures that the signals received by the opposite side are mainly useless signals such as background noise of surrounding environment, thereby achieving good interference confusion effect and better interference effect.

Description

Signal processing system for DRFM (digital radio frequency modulation) jammer

Technical Field

The utility model relates to the technical field of jammers, in particular to a signal processing system for a DRFM jammer.

Background

The Doppler Beam Sharpening (DBS) technology is one of the high-resolution radar imaging technologies widely applied at present, and compared with SAR and other high-resolution imaging modes, the Doppler Beam Sharpening (DBS) technology has the advantages of low operation load, good instantaneity, wide imaging visual angle range and the like, and plays an important role in the fields of battlefield reconnaissance and the like. The DBS technology can be applied to a remote target area imaging search mode, is a hot spot for research in the guidance field, and is particularly widely applied to various types of carrier-reversing seekers.

The existing signal processing system for the interference machine based on the DRFM technology in the radar generally processes and fuses the interference signals pre-stored in a memory with detected signals, and then transmits the fused signals to the other side through a transmitter, a power amplifier and a transmitting antenna, so that the interference signals are formed.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model aims to provide a signal processing system for a DRFM (digital radio frequency modulation) jammer, which aims to solve the technical problems in the background art.

In order to solve the problems, the utility model adopts the following technical scheme.

The signal processing system for the DRFM jammer comprises a direction finding analysis processor and a frequency finding analysis processor which are electrically connected with a signal receiving antenna, and further comprises an A/D module, a DRFM memory, a central processing unit, a D/A module, a beam conversion switch, a clock module, a Rotmann lens, a power amplifier, a first transmitting antenna, a signal acquisition module and an interference data memory, wherein the output ends of the direction finding analysis processor and the frequency finding analysis processor are respectively electrically connected with the DRFM memory through the A/D module, the central processing unit is electrically connected with the DRFM memory, the central processing unit is electrically connected with the beam conversion switch through the D/A module, the clock module is respectively electrically connected with the central processing unit and the beam conversion switch, the Rotmann lens, the power amplifier and the first transmitting antenna are connected in series, the signal acquisition module is electrically connected with the interference data memory, and the interference data memory is electrically connected with the DRFM memory through the A/D module; the signal acquisition module comprises a transmitter, a second transmitting antenna, a receiver, a receiving antenna and a signal processor, wherein the signal processor is respectively and electrically connected with the transmitter, the second transmitting antenna, the receiver, the receiving antenna and the interference data memory; the second transmitting antenna is electrically connected to the transmitter and the receiving antenna is electrically connected to the receiver.

Preferably, the central processing unit is electrically connected with a data storage module, a display screen and an operation terminal, wherein the display screen is used for displaying a simulation graph of data processing, and the operation terminal is used for setting various parameters and operation instructions of the central processing unit.

Further, the data storage module is electrically connected with a plurality of USB data interfaces.

Compared with the prior art, the utility model has the advantages that:

the utility model uses signal collection module to collect the background noise of surrounding environment, and stores it in the interference data memory, when the direction-finding analysis processor and frequency-finding analysis processor detect the signal, the signal is converted by A/D module and stored in DRFM memory, the surrounding environment background noise data and the detected signal are transmitted to central processor to process and fuse, the signal is sent out by D/A module, wave beam conversion switch, rotmann lens, power amplifier and first transmitting antenna, to achieve the purpose of interfering the other side.

Drawings

Fig. 1 is a block diagram of a signal processing system for a DRFM jammer according to the present utility model.

The reference numerals in the figures illustrate:

1. a direction finding analysis processor; 2. a frequency measurement analysis processor; 3. an A/D module; 4. a DRFM memory; 5. a central processing unit; 6. a D/A module; 7. a beam inversion switch; 8. a clock module; 9. a rotman lens; 10. a power amplifier; 11. a first transmitting antenna; 12. a signal acquisition module; 13. an interference data store; 1201. a transmitter; 1202. a second transmitting antenna; 1203. a receiver; 1204. a receiving antenna; 1205. a signal processor; 14. a data storage module; 15. a display screen; 16. an operation terminal; 17. a USB data interface.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.

Examples:

referring to fig. 1, a signal processing system for a DRFM jammer includes a direction-finding analysis processor 1 and a frequency-finding analysis processor 2 electrically connected to a signal receiving antenna, and further includes an a/D module 3, a DRFM memory 4, a central processing unit 5, a D/a module 6, a beam-converting switch 7, a clock module 8, a rotman lens 9, a power amplifier 10, a first transmitting antenna 11, a signal acquisition module 12, and an interference data memory 13, wherein the output ends of the direction-finding analysis processor 1 and the frequency-finding analysis processor 2 are electrically connected to the DRFM memory 4 through the a/D module 3, the central processing unit 5 is electrically connected to the DRFM memory 4 through the D/a module 6, the central processing unit 5 is electrically connected to the beam-converting switch 7 through the D/a module 6, the clock module 8 is electrically connected to the central processing unit 5 and the beam-converting switch 7, the rotman lens 9, the power amplifier 10, the first transmitting antenna 11 are serially connected to the signal acquisition module 12 and the interference data memory 13, and the interference data memory 13 is electrically connected to the DRFM memory 4 through the a/D module 3;

the signal acquisition module 12 is used for acquiring and classifying the background noise of the surrounding environment and storing the background noise on the interference data storage 13, after the direction finding analysis processor 1 and the frequency finding analysis processor 2 detect signals, the signals are converted by the A/D module 3 and then stored in the DRFM storage 4, the surrounding environment background noise data on the interference data storage 13 and the detected signals are simultaneously transmitted to the central processing unit 5 for processing and fusion, and then the signals are sent out through the D/A module 6, the beam conversion switch 7, the Rotmann lens 9, the power amplifier 10 and the first transmitting antenna 11, so that the purpose of interfering the other party is achieved.

In this embodiment, the signal acquisition module 12 includes a transmitter 1201, a second transmitting antenna 1202, a receiver 1203, a receiving antenna 1204, and a signal processor 1205, where the signal processor 1205 is electrically connected to the transmitter 1201, the second transmitting antenna 1202, the receiver 1203, the receiving antenna 1204, and the interference data memory 13, respectively; in this embodiment, the second transmitting antenna 1202 is electrically connected to the transmitter 1201, and the receiving antenna 1204 is electrically connected to the receiver 1203.

The transmitter 1201 is used to periodically transmit radar signals to the surrounding environment through the second transmitting antenna 1202, the receiving antenna 1204 and the receiver 1203 are used to collect reflected radar signals, the signal processor 1205 is used to convert the collected signals into background noise data, and the background noise data are transmitted to the interference data storage 13, once the direction finding analysis processor 1 and the frequency finding analysis processor 2 detect the radar signals of the opposite party, the data in the interference storage 13 can be extracted for processing and fusing, and the data can be sent to the opposite party, so that the opposite party is confused.

In this embodiment, the central processing unit 5 is electrically connected with a data storage module 14, a display screen 15, and an operation terminal 16, wherein the display screen 15 is used for displaying a simulation graph of data processing, and the operation terminal 16 is used for setting various parameters and operation instructions of the central processing unit 5;

in this embodiment, the data storage module 14 is electrically connected to a plurality of USB data interfaces 17;

the display screen 15 is used for displaying the analog graph formed after the data processing, the operation terminal 16 sets various parameters and operation instructions of the central processing unit 5, and important information and operation processes are stored on the data storage module 14.

The working process of the utility model is as follows:

the transmitter 1201 is utilized to periodically transmit radar signals to the surrounding environment through the second transmitting antenna 1202, the receiving antenna 1204 and the receiver 1203 are utilized to collect reflected radar signals, the signal processor 1205 is utilized to convert the collected signals into background noise data and transmit the background noise data to the interference data storage 13, after the direction finding analysis processor 1 and the frequency finding analysis processor 2 detect the signals, the signals are converted through the A/D module 3 and stored in the DRFM storage 4, the surrounding environment background noise data on the interference data storage 13 and the detected signals are simultaneously transmitted to the central processing unit 5 for processing and fusing, and then the signals are transmitted through the D/A module 6, the beam converting switch 7, the Rotmann lens 9, the power amplifier 10 and the first transmitting antenna 11, so that the purpose of interfering the other party is achieved.

The above description is only of the preferred embodiments of the present utility model; the scope of the utility model is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.

Claims

1. The utility model provides a DRFM is signal processing system for jammer, includes and is connected with signal receiving antenna electric direction finding analysis processor (1), survey frequency analysis processor (2), its characterized in that: the system comprises a DRFM memory (4), a central processing unit (5), a D/A module (6), a beam conversion switch (7), a clock module (8), a Rotmann lens (9), a power amplifier (10), a first transmitting antenna (11), a signal acquisition module (12) and an interference data memory (13), wherein the output ends of the direction finding analysis processor (1) and the frequency measuring analysis processor (2) are respectively and electrically connected with the DRFM memory (4) through the A/D module (3), the central processing unit (5) is electrically connected with the DRFM memory (4), the central processing unit (5) is electrically connected with the beam conversion switch (7) through the D/A module (6), the clock module (8) is respectively and electrically connected with the central processing unit (5), the beam conversion switch (7), the Rotmann lens (9), the power amplifier (10) and the first transmitting antenna (11), and the signal acquisition module (12) are electrically connected with the interference memory (13) in series through the DRFM memory (4); the signal acquisition module (12) comprises a transmitter (1201), a second transmitting antenna (1202), a receiver (1203), a receiving antenna (1204) and a signal processor (1205), wherein the signal processor (1205) is electrically connected with the transmitter (1201), the second transmitting antenna (1202), the receiver (1203), the receiving antenna (1204) and the interference data memory (13) respectively; the second transmitting antenna (1202) is electrically connected with the transmitter (1201), and the receiving antenna (1204) is electrically connected with the receiver (1203).

2. The signal processing system for a DRFM jammer as claimed in claim 1, wherein: the central processing unit (5) is electrically connected with a data storage module (14), a display screen (15) and an operation terminal (16), the display screen (15) is used for displaying a simulation graph of data processing, and the operation terminal (16) is used for setting various parameters and operation instructions of the central processing unit (5).

3. The signal processing system for a DRFM jammer as claimed in claim 2, wherein: the data storage module (14) is electrically connected with a plurality of USB data interfaces (17).