scholarly journals Digital beam forming methods for variable polarimetric monopulse radar

2021 ◽  
Author(s):  
Yi Zhang ◽  
Zhangfeng Li ◽  
Pei Zheng ◽  
Houjun Sun
Keyword(s):  
Beam Forming ◽  
Forming Methods

Liquid crystal optical phased array multiple-beam forming methods

2014 ◽  
Author(s):  
Feng Xiao ◽  
Lingjiang Kong ◽  
Xin Liu ◽  
Xiaoguang Zhang
Keyword(s):  
Liquid Crystal ◽  
Phased Array ◽  
Beam Forming ◽  
Multiple Beam ◽  
Optical Phased Array ◽  
Forming Methods

Broadband Beam-Forming Circuit Using Microstrip Multilayer Couplers

2020 ◽  
Vol 10 (5) ◽  
pp. 295
Author(s):  
Aleksandr Ostankov ◽  
Nikita Shchetinin ◽  
Oleg Vyacheslavovich Chernoyarov ◽  
Serguei Pergamenchtchikov
Keyword(s):  
Beam Forming

Development of Optically Controlled Beam-Forming Network

2012 ◽  
Vol E95.B (11) ◽  
pp. 3404-3411
Author(s):  
Akira AKAISHI ◽  
Takashi TAKAHASHI ◽  
Yoshiyuki FUJINO ◽  
Mitsugu OHKAWA ◽  
Toshio ASAI ◽  
...  
Keyword(s):  
Beam Forming

3-Mode reconfigurable beam-forming array antenna for mobile WLAN application

2012 ◽  
Author(s):  
Hyun-Sung Tae ◽  
Hyeong-Seok Jang ◽  
Soo-Ji Lee ◽  
Wang-Sang Lee ◽  
Jong-Won Yu
Keyword(s):  
Array Antenna ◽  
Beam Forming

Wideband mm-wave Non-diffracting Airy Beam Forming

2018 ◽  
Author(s):  
R. Kadlimatti ◽  
H. Gaddam ◽  
H. Larocque ◽  
E. Karimi ◽  
R.W. Boyd ◽  
...  
Keyword(s):  
Beam Forming ◽  
Airy Beam

Multi-Beam Forming and Controls by Metasurface With Phase and Amplitude Modulations

2019 ◽  
Vol 67 (10) ◽  
pp. 6680-6685 ◽  
Author(s):  
Lei Bao ◽  
Rui Yuan Wu ◽  
Xiaojian Fu ◽  
Qian Ma ◽  
Guo Dong Bai ◽  
...  
Keyword(s):  
Beam Forming

scholarly journals An update on image forming methods: structure analysis and Gestalt evaluation of images from rocket lettuce with shading, N supply, organic or mineral fertilization, and biodynamic preparations

2021 ◽  
Author(s):  
Miriam Athmann ◽  
Roya Bornhütter ◽  
Nicolaas Busscher ◽  
Paul Doesburg ◽  
Uwe Geier ◽  
...  
Keyword(s):  
Copper Chloride ◽  
Organic Fertilizer ◽  
Structural Features ◽  
Fertilizer Treatment ◽  
Friedman Test ◽  
Mineral Fertilization ◽  
Cohen’S Kappa ◽  
N Supply ◽  
Cohen's Kappa ◽  
Forming Methods

AbstractIn the image forming methods, copper chloride crystallization (CCCryst), capillary dynamolysis (CapDyn), and circular chromatography (CChrom), characteristic patterns emerge in response to different food extracts. These patterns reflect the resistance to decomposition as an aspect of resilience and are therefore used in product quality assessment complementary to chemical analyses. In the presented study, rocket lettuce from a field trial with different radiation intensities, nitrogen supply, biodynamic, organic and mineral fertilization, and with or without horn silica application was investigated with all three image forming methods. The main objective was to compare two different evaluation approaches, differing in the type of image forming method leading the evaluation, the amount of factors analyzed, and the deployed perceptual strategy: Firstly, image evaluation of samples from all four experimental factors simultaneously by two individual evaluators was based mainly on analyzing structural features in CapDyn (analytical perception). Secondly, a panel of eight evaluators applied a Gestalt evaluation imbued with a kinesthetic engagement of CCCryst patterns from either fertilization treatments or horn silica treatments, followed by a confirmatory analysis of individual structural features. With the analytical approach, samples from different radiation intensities and N supply levels were identified correctly in two out of two sample sets with groups of five samples per treatment each (Cohen’s kappa, p = 0.0079), and the two organic fertilizer treatments were differentiated from the mineral fertilizer treatment in eight out of eight sample sets with groups of three manure and two minerally fertilized samples each (Cohen’s kappa, p = 0.0048). With the panel approach based on Gestalt evaluation, biodynamic fertilization was differentiated from organic and mineral fertilization in two out of two exams with 16 comparisons each (Friedman test, p < 0.001), and samples with horn silica application were successfully identified in two out of two exams with 32 comparisons each (Friedman test, p < 0.001). Further research will show which properties of the food decisive for resistance to decomposition are reflected by analytical and Gestalt criteria, respectively, in CCCryst and CapDyn images.

scholarly journals Integrated Optical Phased Arrays for Beam Forming and Steering

2021 ◽  
Vol 11 (9) ◽  
pp. 4017
Author(s):  
Yongjun Guo ◽  
Yuhao Guo ◽  
Chunshu Li ◽  
Hao Zhang ◽  
Xiaoyan Zhou ◽  
...  
Keyword(s):  
Near Infrared ◽  
Phased Arrays ◽  
Mechanical Stability ◽  
Building Blocks ◽  
High Yield ◽  
Beam Forming ◽  
Integrated Optical ◽  
Optical Phased Arrays ◽  
Infrared Spectral ◽  
Spectral Ranges

Integrated optical phased arrays can be used for beam shaping and steering with a small footprint, lightweight, high mechanical stability, low price, and high-yield, benefiting from the mature CMOS-compatible fabrication. This paper reviews the development of integrated optical phased arrays in recent years. The principles, building blocks, and configurations of integrated optical phased arrays for beam forming and steering are presented. Various material platforms can be used to build integrated optical phased arrays, e.g., silicon photonics platforms, III/V platforms, and III–V/silicon hybrid platforms. Integrated optical phased arrays can be implemented in the visible, near-infrared, and mid-infrared spectral ranges. The main performance parameters, such as field of view, beamwidth, sidelobe suppression, modulation speed, power consumption, scalability, and so on, are discussed in detail. Some of the typical applications of integrated optical phased arrays, such as free-space communication, light detection and ranging, imaging, and biological sensing, are shown, with future perspectives provided at the end.

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