Results 241 to 250 of about 521,871 (286)
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Frequency Diverse Array Radar With Logarithmically Increasing Frequency Offset
IEEE Antennas and Wireless Propagation Letters, 2015In recent years, frequency diverse array (FDA) radar with uniform interelement frequency offset has been proposed and investigated. It has been shown that the beampattern of this form of radar is range-angle-dependent, and it exhibits maxima at multiple range values.
Waseem Khan +2 more
openaire +3 more sources
Frequency Diverse Array Radar With Time-Dependent Frequency Offset
IEEE Antennas and Wireless Propagation Letters, 2014In recent years, frequency diverse array radar with fixed frequency offset has been proposed and investigated. It has been shown that the beampattern of this category of radar is time-dependent as well as range-angle-dependent. In this letter, we have proposed time-dependent frequency offset to achieve a beampattern that is time-independent for a given
Waseem Khan, Ijaz Mansoor Qureshi
openaire +3 more sources
Frequency Diverse Array Antenna: New Opportunities
IEEE Antennas and Propagation Magazine, 2015i»?Phased-array antennas are known for their capability to electronically steer a beam with high effectiveness, but beam steering is fixed in an angle for all range cells. This paper reviews frequency diverse array (FDA) antennas. Different from a phased array, an FDA uses a small frequency increment, as compared with the carrier frequency, across ...
Wen-Qin Wang
openaire +3 more sources
Range-Angle-Dependent Beamforming of Pulsed Frequency Diverse Array
IEEE Transactions on Antennas and Propagation, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xu, Yanhong +3 more
openaire +4 more sources
Lamb Wave Frequency Diverse Array
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2022The imaging method based on the conventional phased array (PA) can only realize angle focusing. To break through the above limitations, frequency diverse array (FDA) is first introduced from radar to Lamb wave, which opens up a possibility to realize angle-range focusing in damage localization. The energy pattern of FDA without considering the features
Yanfeng Lang +3 more
openaire +2 more sources
Frequency Diverse Array Information Geometry Analysis
2020 14th European Conference on Antennas and Propagation (EuCAP), 2020Different classic phased-array that generates only angle-dependent transmit beampattern, frequency diverse array (FDA) offers both angle-dependent and range-dependent transmit beampattern. This paper adopts the information geometry theory to study the fundamental information resolution for a general FDA radar system.
Haifeng Yu +5 more
openaire +1 more source
Frequency diverse array: Simulation and design
2009 Loughborough Antennas & Propagation Conference, 2009In this paper, the radiation characteristics of frequency diversity array are concerned. With a set of CW signals of different frequencies transmitted simultaneously from the array, the transient field is examined by electromagnetic field simulation software.
Jingjing Huang +2 more
openaire +2 more sources