Apparatus of generating jamming signal for deceiving transmission/reception device and method thereof

Patent metadata

Field	Value
Publication number	US-11300657-B2
Application number	US-201916384650-A
Country	US
Kind code	B2
Filing date	Apr 15, 2019
Priority date	Apr 16, 2018
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

There is provided an apparatus for generating a jamming signal for deceiving a transmission/reception device. The apparatus includes a reception unit configured to receive a signal transmitted from the transmission/reception device and a determination unit configured to determine whether or not the received signal is a pulse compression signal. The apparatus further includes a generation unit configured to determine, when the received signal is a pulse compression signal, a deception frequency based on a frequency bandwidth and a pulse width of the received pulse compression signal and generate the jamming signal based on the determined deception frequency.

First claim

What is claimed is:

1. An apparatus for generating a jamming signal for deceiving a transmission/reception device, comprising:
a reception unit configured to receive a signal transmitted from the transmission/reception device;
a determination unit configured to determine whether or not the received signal is a pulse compression signal by analyzing a center frequency, a frequency bandwidth and a pulse width of the received signal and determine that the received signal is the pulse compression signal when a value obtained by multiplying the frequency bandwidth and the pulse width of the received signal exceeds a preset value; and
a generation unit configured to determine, when the received signal is the pulse compression signal, a deception frequency of the jamming signal to be transmitted from the apparatus based on the frequency bandwidth and the center frequency of the pulse compression signal to allow the deception frequency to be within the frequency bandwidth of the pulse compression signal while satisfying an equation of (f 0 −B/2)≤f j ≤(f 0 +B/2) wherein f j indicates the deception frequency; f 0 indicates the center frequency of the pulse compression signal; and B indicates the frequency bandwidth of the pulse compression signal, the generation unit generating the jamming signal based on the determined deception frequency.

2. The apparatus of claim 1 , further comprising:
a transmission unit configured to transmit the generated jamming signal and a target echo signal obtained by reflection of the pulse compression signal from a target to the transmission/reception device.

3. The apparatus of claim 1 , wherein the transmission/reception device is a detection device which includes a radar.

4. A method for generating a jamming signal for deceiving a transmission/reception device, comprising:
receiving a signal transmitted from the transmission/reception device;
determining whether or not the received signal is a pulse compression signal by analyzing a center frequency, a frequency bandwidth and a pulse width of the received signal and determine that the received signal is the pulse compression signal when a value obtained by multiplying the frequency bandwidth and the pulse width of the received signal exceeds a preset value;
determining, when the received signal is the pulse compression signal, a deception frequency of the jamming signal to be transmitted from the apparatus based on the frequency bandwidth and the center frequency of the pulse compression signal to allow the deception frequency to be within the frequency bandwidth of the pulse compression signal while satisfying an equation of (f 0 −B/2)≤f j ≤(f 0 +B/2) wherein f j indicates the deception frequency; f 0 indicates the center frequency of the pulse compression signal; and B indicates the frequency bandwidth of the pulse compression signal, the generation unit generating; and
generating the jamming signal based on the determined deception frequency.

5. The method of claim 4 , further comprising:
transmitting the generated jamming signal and a target echo signal obtained by reflection of the pulse compression signal from a target to the transmission/reception device.

6. The method of claim 4 , wherein the transmission/reception device is a detection device which includes a radar.

7. A system comprising:
an apparatus configured to generate a jamming signal for deceiving a transmission/reception device,
wherein the apparatus includes:
a reception unit configured to receive a signal transmitted from the transmission/reception device;
a determination unit configured to determine whether or not the received signal is a pulse compression signal by analyzing a center frequency, a frequency bandwidth and a pulse width of the received signal and determine that the received signal is the pulse compression signal when a value obtained by multiplying the frequency bandwidth and the pulse width of the received signal exceeds a preset value; and
a generation unit configured to determine, when the received signal is the pulse compression signal, a deception frequency of the jamming signal to be transmitted from the apparatus based on the frequency bandwidth and the center frequency of the pulse compression signal to allow the deception frequency to be within the frequency bandwidth of the pulse compression signal while satisfying an equation of (f 0 −B/2)≤f j ≤(f 0 +B/2) wherein f j indicates the deception frequency; f 0 indicates the center frequency of the pulse compression signal; and B indicates the frequency bandwidth of the pulse compression signal, the generation unit generating the jamming signal based on the determined deception frequency.

Assignees

• Agency Defense Dev

Inventors

• Lee Jung Hoon
• Jo Jeil

Classifications

• G01S7/38 Primary

  Jamming means, e.g. producing false echoes · CPC title

• G01S7/412

  based on a comparison between measured values and known or stored values · CPC title

• G01S15/8961

  using pulse compression · CPC title

• G01S7/292

  Extracting wanted echo-signals · CPC title

• G01S7/32

  Shaping echo pulse signals; Deriving non-pulse signals from echo pulse signals · CPC title