scholarly journals Countering a Self-protection Frequency-shifting Jamming against LFM Pulse Compression Radars

2017 ◽  
Vol 63 (2) ◽  
pp. 145-150 ◽  
Author(s):  
S. Baher Safa Hanbali ◽  
Radwan Kastantin
Keyword(s):  
Pulse Compression ◽  
Radar Signal ◽  
True Target ◽  
Processing Gain ◽  
Before And After ◽  
A New Technique ◽  
Small Change ◽  
Pulse Compression Radar ◽  
Self Protection ◽  
Frequency Shifting

Abstract the well-known range-Doppler coupling property of the LFM (Linear Frequency Modulation) pulse compression radar makes it more vulnerable to repeater jammer that shifts radar signal in the frequency domain before retransmitting it back to the radar. The repeater jammer, in this case, benefits from the pulse compression processing gain of the radar receiver, and generates many false targets that appear before and after the true target. Therefore, the radar cannot distinguish between the true target and the false ones. In this paper, we present a new technique to counter frequency shifting repeater jammers. The proposed technique is based on introducing a small change in the sweep bandwidth of LFM waveform. The effectiveness of the proposed technique is justified by mathematical analysis and demonstrated by simulation.

A review of self-protection deceptive jamming against chirp radars

2017 ◽  
Vol 9 (9) ◽  
pp. 1853-1861 ◽  
Author(s):  
Samer Baher Safa Hanbali ◽  
Radwan Kastantin
Keyword(s):  
Pulse Compression ◽  
Matched Filter ◽  
Coupling Property ◽  
True Target ◽  
Processing Gain ◽  
Different Types ◽  
Before And After ◽  
Deceptive Jamming ◽  
Pros And Cons ◽  
Self Protection

The well-known range-Doppler coupling property of the chirp radar makes it more vulnerable to different types of deceptive repeater jammers that benefit from the pulse compression processing gain of the radar-matched filter. These jammers generate many false targets that appear before and after the true target. Therefore, the radar cannot distinguish the true target from the false ones. This paper reviews different self-protection repeater jammers and presents their pros and cons, in order to provide a reference for the study of jamming/anti-jamming methods.

scholarly journals Antijamming Design and Analysis of a Novel Pulse Compression Radar Signal Based on Radar Identity and Chaotic Encryption

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 5873-5884 ◽  
Author(s):  
Jian Dai ◽  
Xinhong Hao ◽  
Ping Li ◽  
Ze Li ◽  
Xiaopeng Yan
Keyword(s):  
Pulse Compression ◽  
Radar Signal ◽  
Chaotic Encryption ◽  
Pulse Compression Radar

A Reconfigurable 50-Mb/s-1 Gb/s Pulse Compression Radar Signal Processor With Offset Calibration in 90-nm CMOS

2015 ◽  
Vol 63 (1) ◽  
pp. 266-278 ◽  
Author(s):  
Jun Li ◽  
Mehmet Parlak ◽  
Hirohito Mukai ◽  
Michiaki Matsuo ◽  
James F. Buckwalter
Keyword(s):  
Pulse Compression ◽  
Radar Signal ◽  
Pulse Compression Radar ◽  
Signal Processor

scholarly journals Design and Implementation Pulse Compression for S-Band Surveillance Radar

2020 ◽  
Vol 7 (1) ◽  
pp. 20
Author(s):  
Kalfika Yani ◽  
Fiky Y Suratman ◽  
Koredianto Usman
Keyword(s):  
Signal Processing ◽  
High Speed ◽  
Pulse Compression ◽  
Continuous Wave ◽  
Radar Signal ◽  
Radar Signal Processing ◽  
Digital Platform ◽  
Range Resolution ◽  
Pulse Compression Radar ◽  
Cw Radar

The radar air surveillance system consists of 4 main parts, there are antenna, RF front-end, radar signal processing, and radar data processing. Radar signal processing starts from the baseband to IF section. The radar waveform consists of two types of signal, there are continuous wave (CW) radar, and pulse compression radar [1]. Range resolution for a given radar can be significantly improved by using very short pulses. Pulse compression allows us to achieve the average transmitted power of a relatively long pulse, while obtaining the range resolution corresponding to a short pulse. Pulse compression have compression gain. With the same power, pulse compression radar can transmit signal further than CW radar. In the modern radar, waveform is implemented in digital platform. With digital platform, the radar waveform can optimize without develop the new hardware platform. Field Programmable Gate Array (FPGA) is the best platform to implemented radar signal processing, because FPGA have ability to work in high speed data rate and parallel processing. In this research, we design radar signal processing from baseband to IF using Xilinx ML-605 Virtex-6 platform which combined with FMC-150 high speed ADC/DAC.

scholarly journals Bi-alphabetic pulse compression radar signal design

Sadhana ◽  
2000 ◽  
Vol 25 (5) ◽  
pp. 481-488 ◽  
Author(s):  
I. A. Pasha ◽  
P. S. Moharir ◽  
N. Sudarshan Rao
Keyword(s):  
Pulse Compression ◽  
Radar Signal ◽  
Signal Design ◽  
Pulse Compression Radar

Fractional Fourier transform-based chirp radars for countering self-protection frequency-shifting jammers

2017 ◽  
Vol 9 (8) ◽  
pp. 1687-1693 ◽  
Author(s):  
Samer Baher Safa Hanbali ◽  
Radwan Kastantin
Keyword(s):  
Fourier Transform ◽  
Theoretical Analysis ◽  
Fractional Fourier Transform ◽  
Matched Filter ◽  
Novel Technique ◽  
True Target ◽  
Frequency Domains ◽  
Self Protection ◽  
Time And Frequency Domains ◽  
Frequency Shifting

Self-protection deceptive jammers create at the radar receiver output multiple-false targets that are impossible to isolate in both time and frequency domains. In this paper, we introduce a novel technique based on fractional Fourier transform (FrFT) to discriminate between the true target echo and those false targets in the case of frequency-shifting jammers. In fact, we exploit the capability of the FrFT to resolve, in a matched manner, spectra that are overlapping in time and frequency. This is a property that cannot be achieved using a standard matched filter. The theoretical analysis of this technique is presented and its effectiveness is verified by simulation.

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