Anti-Jamming and LPI Radar with Spread Spectrum Technology

In order to enhance the capability of anti-jamming and Low Probability of Intercept (LPI) of radar system, spread spectrum signals are designed for modern radar system. Emission signal is coded with PN codes at the transmitting terminal. Spectrum of signal is spreaded and multi-signal mixed together, so it is not easy to intercept. At the receiving terminal, undesired signals are spreaded when dispreading desired signal. Signal to noise ratio (SNR) of the received signals is raised after despreading, so the detection range broadens. Computer simulations verify the good performance of the proposed approach.

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Estimating spreading waveform of long-code direct sequence spread spectrum signals at a low signal-to-noise ratio

IET Signal Processing ◽

10.1049/iet-spr.2011.0173 ◽

2012 ◽

Vol 6 (4) ◽

pp. 358 ◽

Cited By ~ 12

Author(s):

H.G. Zhang ◽

L. Gan ◽

H.S. Liao ◽

P. Wei ◽

L.P. Li

Keyword(s):

Spread Spectrum ◽

Signal To Noise Ratio ◽

Direct Sequence Spread Spectrum ◽

Direct Sequence ◽

Signal To Noise ◽

Noise Ratio ◽

Spread Spectrum Signals

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Low signal-to-noise-ratio underwater acoustic communications using direct-sequence spread-spectrum signals

OCEANS 2007 - Europe ◽

10.1109/oceanse.2007.4302213 ◽

2007 ◽

Cited By ~ 9

Author(s):

T.C. Yang ◽

Wen-Bin Yang

Keyword(s):

Spread Spectrum ◽

Signal To Noise Ratio ◽

Direct Sequence Spread Spectrum ◽

Underwater Acoustic Communications ◽

Direct Sequence ◽

Signal To Noise ◽

Acoustic Communications ◽

Underwater Acoustic ◽

Noise Ratio ◽

Spread Spectrum Signals

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Estimating Symbol Duration of Long-Code Direct Sequence Spread Spectrum Signals at a Low Signal-to-Noise Ratio

Wireless Personal Communications ◽

10.1007/s11277-020-07453-5 ◽

2020 ◽

Vol 114 (3) ◽

pp. 1887-1904

Author(s):

Zhi-Tao Huang ◽

Jiang-Hai Liang ◽

Xiang Wang

Keyword(s):

Spread Spectrum ◽

Signal To Noise Ratio ◽

Direct Sequence Spread Spectrum ◽

Direct Sequence ◽

Signal To Noise ◽

Noise Ratio ◽

Symbol Duration ◽

Spread Spectrum Signals

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Improving detection range, signal-to-noise ratio, and measurement time through hyperentanglement

Optical Engineering ◽

10.1117/1.oe.56.7.071511 ◽

2017 ◽

Vol 56 (7) ◽

pp. 071511 ◽

Cited By ~ 5

Author(s):

James F. Smith

Keyword(s):

Signal To Noise Ratio ◽

Measurement Time ◽

Signal To Noise ◽

Detection Range ◽

Noise Ratio

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Signal-to-Noise Ratio in Doppler Radar System for Heart and Respiratory Rate Measurements

IEEE Transactions on Microwave Theory and Techniques ◽

10.1109/tmtt.2009.2029668 ◽

2009 ◽

Vol 57 (10) ◽

pp. 2498-2507 ◽

Cited By ~ 75

Author(s):

A.D. Droitcour ◽

O. Boric-Lubecke ◽

G.T.A. Kovacs

Keyword(s):

Respiratory Rate ◽

Doppler Radar ◽

Signal To Noise Ratio ◽

Radar System ◽

Signal To Noise ◽

Noise Ratio

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3-Level security based spread spectrum image steganography with enhanced peak signal to noise ratio

2017 Fourth International Conference on Image Information Processing (ICIIP) ◽

10.1109/iciip.2017.8313696 ◽

2017 ◽

Cited By ~ 4

Author(s):

Poonam Yadav ◽

Maitreyee Dutta

Keyword(s):

Spread Spectrum ◽

Signal To Noise Ratio ◽

Image Steganography ◽

Signal To Noise ◽

Noise Ratio

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Chirp Spread Spectrum Performance in Low Probability of Intercept Theater

MILCOM 2018 - 2018 IEEE Military Communications Conference (MILCOM) ◽

10.1109/milcom.2018.8599777 ◽

2018 ◽

Author(s):

Bijan G. Mobasseri ◽

Khanh D. Pham

Keyword(s):

Spread Spectrum ◽

Low Probability ◽

Chirp Spread Spectrum ◽

Low Probability Of Intercept

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Netted Radar System Design with Spread Spectrum Technology

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.55-57.648 ◽

2011 ◽

Vol 55-57 ◽

pp. 648-653

Author(s):

Lian Qing Fu ◽

Li Sheng Yang ◽

Tao Wang ◽

Qing Le Zhang

Keyword(s):

System Design ◽

Spread Spectrum ◽

Cross Correlation ◽

Mutual Interference ◽

Radar System ◽

Power Ratio ◽

Emission Signal ◽

Simulation Results ◽

Correlation Properties

In this paper, a novel netted radar system is designed to reduce the influence of mutual interference between signals. The emission signals of all stations are assigned the orthogonal PN codes. Because of the good autocorrelation and cross-correlation properties, mutual interference becomes weaker and signals from different stations could be separated by the preassigned PN codes. At the same time, the spectrum of the emission signal is spreaded, the peak-to-mean envelope power ratio (PMEPR) and the intercepted probability of the signals descend therefore. Simulation results show the good performance of the proposed approach.

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