Results 141 to 150 of about 619,289 (184)

Distribution Model Reveals Rapid Decline in Habitat Extent for Endangered Hispid Hare: Implications for Wildlife Management and Conservation Planning in Future Climate Change Scenarios. [PDF]

Biology (Basel)
Abedin I, Mukherjee T, Kim AR, Kim HW, Kang HE, Kundu S.   +5 more
europepmc   +1 more source

LPI Radar Signal Recognition Based on Dual-Channel CNN and Feature Fusion

Symmetry, 2022
The accuracy of low probability of intercept (LPI) radar waveform recognition is an important and challenging problem in electronic warfare. Aiming at the problem of the difficulty in feature extraction and the low recognition rates of the LPI radar ...
Wenchao Zhai, Daying Quan
exaly   +2 more sources

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Semantic Learning for Analysis of Overlapping LPI Radar Signals

IEEE Transactions on Instrumentation and Measurement, 2023
The 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, Lipo Wang, Jingyi Zhang, Si Chen, Shuning Zhang   +4 more
openaire   +2 more sources

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.
exaly   +2 more sources

Interception of LPI radar signals

IEEE International Conference on Radar, 2002
The 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
openaire   +1 more source

LPI Radar Signal Design Resistant to Identification by ESM Systems

IEEE Transactions on Aerospace and Electronic Systems, 2023
Guolong Cui, Ye Yuan, Wee Peng Tay
exaly   +3 more sources

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). The proposed method has a high processing gain, which makes it highly suitable for very weak LPI signals.
Farzam Hejazikookamari, Yaser Norouzi, Elham Sadat Kashani, Mohammad Mahdi Nayebi   +3 more
openaire   +1 more source

Methods for Analysis of LPI Radar Signals

2006 IEEE 14th Signal Processing and Communications Applications, 2006
LPI (Low Probability of Intercept) radars occupy wide frequency bands and have very low peak power so they are difficult to be detected by hostile intercept receivers. Hostile radiometric receivers are not able to intercept and measure the parameters of LPI signals which lie in wide frequency bands.
Ozkazanc, Yakup, Tezel, Caner
openaire   +2 more sources

SAR processing To localize LPI radars

2014 International Radar Conference, 2014
In this paper a new passive imaging method is introduced that is mainly suitable for Geo-locating LPI radars. The method uses two Electronic Support (ES) receivers located on a fast moving platform (e.g. an airplane or a satellite). The proposed method has a high processing gain which makes it absolutely suitable against very weak LPI signals.
F. Hejazi, Y. Norouzi, M. M. Nayebi
openaire   +1 more source