Results 21 to 30 of about 5,461,422 (271)
Design of frequency invariant beamformer for broadband arrays [PDF]
, 2007 A simple method for the design of a class of arrays with frequency invariant beam patterns is proposed. Starting from the desired frequency invariant beam pattern of an n-D array, the proposed method uses a series of substitutions and an n-D inverse ...
Weiss, Stephan +5 more
core +4 more sources
A New Class of Broadband Arrays With Frequency Invariant Beam Patterns [PDF]
, 2004 In this paper, a new class of broadband arrays with frequency-invariant beam pattern is proposed. By suitable substitutions, the beam pattern of a continuous sensor array with continuous temporal processing can be regarded as the Fourier transform of its
S. Weiss +5 more
core +5 more sources
Parametric localisation in frequency diverse array [PDF]
IET Radar, Sonar & Navigation, 2020 The authors present a non‐traditional, parametric method for velocity, angle, and range estimation in a frequency diverse array radar. Unlike the traditional beamforming techniques, the proposed scheme transmits an omni‐directional sinusoid regardless of the target locations.
Mahata, Kaushik, Hyder, Md Mashud
openaire +1 more source
IET Radar, Sonar & Navigation, 2022 Frequency diversity array (FDA) radar provides more degrees of freedom and can generate range‐angle‐time‐dependent beampattern. Furthermore, based on the receiver's multi‐input multi‐output (MIMO) scheme, the frequency diversity array‐multi‐input multi ...
Changlin Zhou +5 more
doaj +1 more source
Recent Advances in Frequency Diverse Array Radar Techniques
Leida xuebao, 2022 Due to the range dependence and time-varying array factor of Frequency Diverse Array (FDA) radar, it can overcome the miss of range variable in traditional phased-array factor and gain loss of Multiple-Input Multiple-Output (MIMO) radar array.
Wenqin WANG, Shunsheng ZHANG
doaj +1 more source
Numerical Model of a 28-GHz Frequency Diverse Array Antenna
Proceedings, 2020 In this work we make use of the frequency diverse array (FDA) concept, whose design is based upon a frequency increment across the antenna elements to generate a beam steering that is a function of angle, time and range.
Marc Bernice Angoue Avele +4 more
doaj +1 more source
Impacts of frequency increment errors on frequency diverse array beampattern [PDF]
EURASIP Journal on Advances in Signal Processing, 2015 Different from conventional phased array, which provides only angle-dependent beampattern, frequency diverse array (FDA) employs a small frequency increment across the antenna elements and thus results in a range angle-dependent beampattern. However, due to imperfect electronic devices, it is difficult to ensure accurate frequency increments, and ...
Kuandong Gao +4 more
openaire +2 more sources
Passive Localization Countermeasure Based on Frequency Diverse Array
Leida xuebao, 2021 Passive localization technology is an integral part of electronic warfare. However, most methods for countering passive localization systems, such as radio frequency stealth and electronic interference, have limitations. This paper proposes a new passive
Haoliang GUAN +2 more
doaj +1 more source
Design of a Novel High Frequency Ultrasound Annular Array [PDF]
, 2009 The design of a novel 50MHz 7-elment annular array is described. Equal-width electrodes are deposited on the rear face of piezoelectric layer to form a kerfless array, instead of mechanical cutting.
Harris, NR +5 more
core +2 more sources
Analysis of multicarrier frequency diverse array radar over time
IET Signal Processing, 2022 The frequency diverse array (FDA) can provide degrees of freedom in both the range and angle domains by controlling the frequency offset across adjacent elements.
Yingjian Zhao +5 more
doaj +1 more source