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Large future genetic diversity losses are predicted from conservation indicators even with habitat protection. [PDF]
Proc Natl Acad Sci U S AMualim KS +5 more
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A Novel Method to Detect and Localize LPI Radars
IEEE Transactions on Aerospace and Electronic Systems, 2019In this study, a new passive method suitable for geolocating low probability of intercept (LPI) radars is introduced. The method uses two electronic support receivers placed on a fast moving platform (e.g., an airplane or a satellite). The proposed method has a high processing gain, which makes it highly suitable for very weak LPI signals.
Farzam Hejazikookamari, Yaser Norouzi
exaly +2 more sources
An LPI design for secure OFDM systems
MILCOM 2012 - 2012 IEEE Military Communications Conference, 2012Traditional OFDM systems present some embedded features that may be exploited in order to intercept the wireless transmitted signal. However, such a possibility is not accepted in military applications where security is a very important issue. Cyclic prefix is one of the most obvious OFDM parameters that induce cyclostationarity features.
Marwen Bouanen +4 more
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LPI/LPD Detection Sensitivity Limitations
2014 IEEE Military Communications Conference, 2014LPI/LPD (Low Probability of Intercept/Low Probability of Detection) analyses typically follow the original work of Urkowitz [1] to obtain probability of detection for a specified false alarm rate. Such analyses are based on a uniform time invariant noise background.
Robert B. Dybdal, Kwok M. Soohoo
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Interception of LPI radar signals
IEEE International Conference on Radar, 2002The interception problem is reviewed, an LPI radar design is examined and the performance of intercept receivers of the future is considered. The receiver needed to intercept LPI signals must respond across a broad band and provide noncoherent integration capabilities over times comparable to the coherent (or noncoherent) integration times used by ...
G. Schrick, R.G. Wiley
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LPI waveforms for active sonar?
2004 IEEE Aerospace Conference Proceedings (IEEE Cat. No.04TH8720), 2004The idea of a low probability of intercept (LPI) waveform is that its form is chaotic. It can of course be recalled by the transmitter (platform), and matched to what is received; but to the target it appears only as noise, and consequently the robust target receiver can only detect a rise in energy.
P. Willett, J. Reinert, R. Lynch
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LPI in pulsed laser space communications
IEEE Journal on Selected Areas in Communications, 1993A basic low-probability of intercept (LPI) study for a pulsed-laser pulse position modulated (PPM) optical link with a colocated direct detection intercepting receiver is presented. The latter is considered to be a form of optical radiometer using continuous threshold testing to detect the presence of the transmitting laser.
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Semantic Learning for Analysis of Overlapping LPI Radar Signals
IEEE Transactions on Instrumentation and Measurement, 2023The increasingly complex radio environment may cause the received low probability of intercept (LPI) radar signals to overlap in time-frequency domains. Analyzing overlapping LPI radar signals requires identifying the modulation type and estimating the parameters of each component.
Kuiyu Chen +4 more
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