Results 251 to 260 of about 5,156 (280)

A study of GPS jamming and anti-jamming

2009 2nd International Conference on Power Electronics and Intelligent Transportation System (PEITS), 2009
The weaknesses of GPS (Global Positioning System) is vulnerable to be jammed, so the study of jamming and anti-jamming of GPS has drawn more and more attention. In this paper, it analyzes the performance of GPS jamming and the anti-jamming of GPS receiver about blanket jamming.
Hui Hu, Na Wei
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Anti-jamming on the OR-channel

Proceedings of 1994 IEEE International Symposium on Information Theory, 2002
We propose a frequency hopping scheme with M-ary frequency shift keying applied to the OR-channel and give its error and erasure probabilities. Asymptotically, the bit error probability is bounded away from zero whereas it polynomially tends to zero for our previously proposed generalized scheme. >
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A self-coherence anti-jamming GPS receiver

IEEE Transactions on Signal Processing, 2005
In this correspondence, we present a self-coherence anti-jamming Global Positioning System (GPS) receiver that relies on the unique structure of the coarse/acquisition (C/A) code of the GPS signals. Since the C/A-code is repeated 20 times within each navigation symbol, the GPS signal exhibits strong self-coherence between chip-rate samples separated by
Sun, Wei., Amin, Moeness G.
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Anti-Jamming Radiometric Automatic Tracking System

2021 XXIV International Conference on Soft Computing and Measurements (SCM), 2021
The paper studies an anti-jamming system for automatic tracking of single vehicles. Tracking is implemented by vehicles radiation in the millimeter wavelength range. Authors synthesized tracking using statistically optimal algorithm for joint filtering of continuous and discrete Markov sequences.
Vladimir E. Mager, Elena N. Desyatirikova, Vladimir I. Lutin   +2 more
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Optimal anti-jamming strategy in sensor networks

2012 IEEE International Conference on Communications (ICC), 2012
Wireless sensor networks have been widely applied to various application domains such as environmental monitoring and surveillance. Because of reliance on the open transmission media, a sensor network may suffer from radio jamming attacks, which is easy to launch but difficult to defend.
Xiangpeng Li, Yanmin Zhu, Bo Li
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Anti-Jamming Transmitter Independent Radar Networks

2008 International Conference on Signal Processing, Communications and Networking, 2008
A transmitter independent receiver network (TIRN) is a network of radar receivers that operates in an area without cooperating with a particular radar transmitter, but rather using transmitters of opportunity (TOA) in order to detect and track airborne, ballistic or surface targets.
Nikos J. Farsaris, P. Stavroulakis, Thomas D. Xenos   +2 more
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A space-frequency anti-jamming algorithm for GPS

2007 IEEE Antennas and Propagation Society International Symposium, 2007
In this paper, we proposed a space-frequency GPS anti-jamming technique with constant beamwidth. The proposed method sets up a new data model by Fourier transformation. On the basis of the new model, the optimal output SINR can be obtained by using Capon beamforming similar to the only spatial domain. Also, in order to obtain the distortless GPS signal,
Dan Lu, Renbiao Wu, Zhigang Su, Wei Huang   +3 more
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Anti-jamming techniques for synthetic aperture radar

2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
Excellent performance of SAR has aroused deep study of jamming techniques. This paper first discusses present jamming techniques and their shortcomings, then gives methodology of classifying ECCM of SAR, and at the same time, gives principle and results of signal design method, which combines orthogonal codes and random initial phase at each pulse, the
Wang Xian-ming, Wang Xing-liang, Li Wei
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Efficient uncoordinated FHSS anti-jamming communication

Proceedings of the tenth ACM international symposium on Mobile ad hoc networking and computing, 2009
We address the problem of jamming-resistant communication in scenarios in which the communicating parties do not share secret keys. This includes scenarios where the communicating parties are not known in advance or where not all parties can be trusted (e.g., jamming-resistant key establishment or anti-jamming broadcast to a large set of unknown ...
Christina Pöpper, Srdjan Capkun, Mario Strasser   +2 more
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Distributed anti-jam wireless communications network

MILCOM 97 MILCOM 97 Proceedings, 2002
Motorola is investigating network architectures to support anti-jam wireless communications for the Advanced Telecommunication/Information Distribution Research Program Consortium sponsored by the U.S. Army Research Laboratory. It is envisioned that the network architecture will contain a distributed network control structure and mobile nodes.
M. Ennis, S. Chuprun
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