Results 1 to 10 of about 15,411 (120)

Radar target simulator with complex-valued delay line modeling based on standard radar components [PDF]

open access: yesAdvances in Radio Science, 2018
With increasing radar activities in the automotive, industrial and private sector, there is a need to test radar sensors in their environment. A radar target simulator can help testing radar systems repeatably.
A. R. Diewald, M. Steins, S. Müller
doaj   +1 more source

Cooperative radar with signature method for unambiguity [PDF]

open access: yesAdvances in Radio Science, 2019
The increasing availability of off-the-shelf high-frequency components makes radar measurement become popular in mainstream industrial applications. We present a cooperative FM radar for strongly reflective environments, being devised for a range of up ...
S. Müller, A. R. Diewald
doaj   +1 more source

Dual-Band Transmitter and Receiver With Bowtie-Antenna in 0.13 μm SiGe BiCMOS for Gas Spectroscopy at 222 - 270 GHz

open access: yesIEEE Access, 2021
This paper presents a transmitter (TX) and a receiver (RX) with bowtie-antenna and silicon lens for gas spectroscopy at 222-270 GHz, which are fabricated in IHP’s $0.13~\mu \text{m}$ SiGe BiCMOS technology. The TX and RX use two integrated local
Klaus Schmalz   +7 more
doaj   +1 more source

Influence of a target’s inclination on LiDAR waveform and its application

open access: yesIET Optoelectronics, 2022
Inclination is one of the important parameters of a target’s surface, which is closely related to the waveform of light detection and ranging. When the target is tilted, the laser spot on the target’s surface changes greatly, and the influence of the ...
Tao Yang   +7 more
doaj   +1 more source

Comprehensive signal processing approaches for non-contact heartbeat detection using 24 GHz FMCW radar [PDF]

open access: yesAdvances in Radio Science
Non-contact monitoring of vital signs has become increasingly important for enhancing patient comfort and reducing interference during medical assessments.
A. Marnach, V. Lücken, A. R. Diewald
doaj   +1 more source

Concepts for a cost-efficient, additively manufactured WR90 coaxial waveguide transition [PDF]

open access: yesAdvances in Radio Science
This publication focuses on the production of low-cost prototypes of coaxial-waveguide transitions (CWTs) that achieve the performance level of industrial WR90 and WR187 CWTs.
M. Falk   +3 more
doaj   +1 more source

Efficient 2D adaptive beamforming algorithm based on sparse array optimisation

open access: yesThe Journal of Engineering, 2019
In this study, a 2D adaptive beamforming algorithm for sparse array is proposed. Firstly, a signal model based on matrix completion theory for adaptive beamforming in sparse array is established, which is proved to satisfy null space property.
Chaoyu Wang   +3 more
doaj   +1 more source

A PROPOSED FRAMEWORK TO UNMIX SCATTERING MECHANISMS OF POLARIMETRIC RADAR IMAGES USING VERY HIGH RESOLUTION OPTICAL IMAGES [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
A new approach has been proposed for radar and optical image fusion. Candidate images for fusion are polarimetric radar images and very high resolution stereoscopic optical images.
S. Giordano, G. Mercier, J.-P. Rudant
doaj   +1 more source

Simultaneously estimating surface soil moisture and roughness of bare soils by combining optical and radar data

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2021
Both radar and optical signals are sensitive to the change of surface soil moisture (SSM) and surface roughness properties (such as root mean squared height- RMSH), and the accuracy of retrieved SSM from single radar and optical remote sensing data is ...
Xingming Zheng   +7 more
doaj   +1 more source

AUTOMATIC POLE DETECTION IN AERIAL AND SATELLITE IMAGERY FOR PRECISE IMAGE REGISTRATION WITH SAR GROUND CONTROL POINTS [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
The world-wide absolute geographic positioning accuracy of optical Satellite imagery is mostly about a few pixels of the image resolution. So for example WorldView-3 images have a CE90 of about 4 m.
T. Krauß, F. Kurz, H. Runge
doaj   +1 more source

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