Results 201 to 210 of about 71,586 (234)

Numerical study of performance of two lightning prediction methods based on: Lightning Potential Index (LPI) and electric POTential difference (POT) over Tehran area

Journal of Atmospheric and Solar-Terrestrial Physics, 2019
The electric POTential difference (POT) and the Lightning Potential Index (LPI) performance in predicting the lightning activity is investigated and the probable relationship between them is examined.
M. Gharaylou, M. Farahani, M. Hosseini, A. Mahmoudian   +3 more
semanticscholar   +1 more source

Performance bounds for LPI communications

Conference Proceedings on Tactical Communications, Vol.1., 2002
Evaluation of the theoretical lower bound on signal-to-noise ratio for a spread spectrum system is provided. The bound is based on Shannon's sphere packing bound and is evaluated for a finite probability of error and coding complexity. Coding delay, which is the time from when the first information bit enters the encoder to when the first information ...
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Stochastische Programmierung unter LPI-Bedingungen

1976
Die Fachliteratur, die den Problemen der stochastischen Programmierung gewidmet ist, ist besonders im Bereich der linearen Programmierung sehr umfangreich. Leider nicht fur den Fall stochastischer Modelle, in denen die Verteilung gewisser Zufallsvariablen nur teilweise bekannt ist.
Eduard Kofler, Günter Menges
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A Novel Method to Detect and Localize LPI Radars

IEEE Transactions on Aerospace and Electronic Systems, 2019
In 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).
Farzam Hejazikookamari, Y. Norouzi, E. Kashani, M. Nayebi   +3 more
semanticscholar   +1 more source

Muti-Channel Digital LPI Signal Detector

2006 CIE International Conference on Radar, 2006
The theory of LPI radar signal interception is introduced and a method using multi-channel digital deramping is discussed in detail for FMCW signals. Many simulation experiments on the method have been done in several possible situations, and on the basis of them, the influences of mismatch factor and unsynchronized phase on the detection performance ...
Song Jie, Tang Xiao-ming, He You
openaire   +1 more source

Reduced complexity and near optimum detector for linear‐frequency‐modulated and phase‐modulated LPI radar signals

IET radar, sonar & navigation, 2019
Dealing with low probability of intercept (LPI) radar signals in very low signal-to-noise ratio (SNR) stages requires reconnaissance systems to employ an effectively practical method for detecting and fully characterising the received signals.
Ali A. Dezfuli, Arash Shokouhmand, A. H. Oveis, Y. Norouzi   +3 more
semanticscholar   +1 more source

LPI Radar: Fact or Fiction

IEEE Aerospace and Electronic Systems Magazine, 2006
LPI radar is a system that consists of a radar and ES system. Its performance depends on both components. An LPI performance factor is derived and applied to several examples. Operational LPI radars are described. A digital LPI radar detector is described and test results presented.
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LPI: learn postures for interactions

Machine Vision and Applications, 2021
Muhammad Raees, Sehat Ullah
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Variability of leachate quality and polluting potentials in light of leachate pollution index (LPI) - A global perspective.

Chemosphere, 2021
T. Abunama, Tyrone Moodley, M. Abualqumboz, S. Kumari, F. Bux   +4 more
semanticscholar   +1 more source

Preliminary Talk and LPI Tasks

2017
This chapter provides an introduction and overview of interview tasks and the preassessment interaction that is considered the preliminary or warm-up to the actual interview tasks. It features two contrastive warm-up excerpts that potentially influence the stance of the candidate to the subsequent tasks.
openaire   +1 more source