Showing 1-25 of 5,648 resultsfor "Index Terms":radar cross-section measurements
"Index Terms":radar cross-section measurements
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A plane-wave synthesis approach for determining the 3D monostatic radar cross section from a set of near-field measurements is presented. Compared to image based techniques, it does not suffer from inaccuracies in the case of multiple interactions. At the same time, very general measurement setups are possible without introducing severe truncation errors and the resulting field transformation prob...Show More
Sea-Surface Current Features Observed by Doppler Radar
Nicole Braun;Friedwart Ziemer;Alexander Bezuglov;Marius Cysewski;Gottfried Schymura
A coherent X-band radar was operated from the shore to measure velocities at the sea surface. The test site at a tidal inlet (Lister Tief) in the German Bight lay protected from swell and long wind waves. A vertical-vertical antenna was used to obtain the backscattered radar signal caused by Bragg scattering. To cover a sector of the circle, the antenna was rotated in 1Dstrok steps. At each step, ...Show More
The process of the measurement of the radar cross section of objects using a test range is described in this recommended practice. The term radar cross section (RCS) is defined, and the characteristics of different types of test ranges are given. The responsibilities of the test range operators are shown to involve test and calibration of the measurement range systems and to take the measurements ...Show More
Measurement of polarimetric RCS characteristics of canonical targets under GB-SAR environment
2017 Third Asian Conference on Defence Technology (ACDT)
Year: 2017 | Conference Paper |
Cited by: Papers (2)
This work presents a novel aspect for measurement and implementation of a radar cross section (RCS) using the polarimetric backscattered power under ground-based Synthetic Aperture Radar (GB-SAR) environment. Special attention is given to combine the GB-SAR principle with RCS measurement in order to determine the polarimetric backscatter characteristics of canonical targets along the azimuth direc...Show More
Traffic speed enforcement is becoming more reliant on automated speed-detection devices, particularly the use of photographically linked slant radar devices. We have conducted an analysis of whether target-aspect-dependent radar cross section (RCS) could have an effect on the accuracy of speed measurements. It was found that there is the potential for a 2.5% error (for a radar aligned at 22" to th...
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Show MoreThe process of the measurement of the radar cross section of objects using a test range is described in this recommended practice. The term radar cross section (RCS) is defined, and the characteristics of different types of test ranges are given. The responsibilities of the test range operators are shown to involve test and calibration of the measurement range systems and to take the measurements ...Show More
Polarimetric RCS signature of canonical target in dense grass area using GB-SAR environment
2017 International Electrical Engineering Congress (iEECON)
Year: 2017 | Conference Paper |
Applications for radar systems are continuously being developed, particularly in the remote sensing and positioning of searched objects in disaster and forest areas. In this paper, the concept of radar cross section (RCS) measurements for acquiring and identifying the polarimetric backscatter characteristics of canonical targets is presented. This concept is achieved with the principle of using gr...Show More
An improved cylindrical NFFFT for compact measurement facilities
2012 Asia Pacific Microwave Conference Proceedings
Year: 2012 | Conference Paper |
Cited by: Papers (3)
An improved version of the cylindrical near-field-to-far-field transformation (NFFFT) with computational complexity comparable to that of the circular NFFFT is described. Instead of producing a 3D radar image the proposed approach generates a 2D projection of the image on the plane, in which the radar cross section is to be determined. The imaging operator is modified so as to allow probes with di...Show More
Compensation of Ambiguities in Fast ISAR Measurements
2019 13th European Conference on Antennas and Propagation (EuCAP)
Year: 2019 | Conference Paper |
Scattering mechanisms of radar targets are analysed using Radar Cross-Section (RCS) images. Those measurements are performed in an anechoic chamber to avoid external influences having an impact on the results. An unambiguous range covering the whole measurement chamber to avoid aliasing effects can be accomplished depending on the frequency step size. Taking into account a high bandwidth to enable...Show More
An experimental network analyzer based ISAR system for studying SAR fundamentals
M. Zafri Baharuddin;Bambang Setiadi;Josaphat T. S. Sumantyo;Hiroaki Kuze
2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)
Year: 2015 | Conference Paper |
Cited by: Papers (3)
Earth observation from airborne and spaceborne platforms using synthetic aperture radar (SAR) has provided scientists and researchers with a deeper understanding of the planet for geological studies, weather forecasting, and disaster mitigation, among others. Aiming to develop our own spaceborne synthetic aperture radar for the purpose of environmental remote sensing, we have a program to test our...Show More
Backscattering Behavior of Vulnerable Road Users Based on High-Resolution RCS Measurements
Sevda Abadpour;Sören Marahrens;Mario Pauli;Jan Siska;Nils Pohl;Thomas Zwick
Automotive radars, along with optical sensors such as cameras or lidars, offer a reliable way of obtaining the 3-D information about the environment. Of particular interest in autonomous driving (AD) is the reliable detection of particularly vulnerable road users (VRUs). Modern radar sensors are able to detect, distinguish, and track targets with high resolution. Relying on that, a backscattering ...Show More
RCS Calculation based on Near-Field L1-Regularized SAR Imaging
2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS
Year: 2021 | Conference Paper |
The measurement accuracy of radar cross section (RCS) based on radar image is usually affected by the image quality. The sidelobe and clutter in the image will reduce the accuracy of RCS measurement. In order to solve the problem, a RCS measurement method based on near-field L1 regularized three-dimensional (3D) synthetic aperture radar (SAR) imaging is proposed. Compared with the traditional matc...Show More
Analyzing the Movement of Motorcyclist’s Extremities based on its Angular Resolved RCS Measurement
Sevda Abadpour;Christian Schyr;Mario Pauli;Florian Klein;Rene Degen;Jan Siska;Nils Pohl;Thomas Zwick
2023 20th European Radar Conference (EuRAD)
Year: 2023 | Conference Paper |
Understanding the backscattering behavior of traffic objects is essential to approach realistic simulation results from evaluating the functionality of the automotive radar in over-the-air (OTA) validation test methods. This demands collecting the radar cross section (RCS) of vulnerable road users (VRUs) simultaneously with micro-Doppler information arising from their movement, especially those wi...Show More
Measurement results of vehicular RCS characteristics for 79GHz millimeter band
2018 IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)
Year: 2018 | Conference Paper |
Cited by: Papers (11)
79 GHz band has recently attracted considerable interests as vehicular UWB radar for safe driving and self-driving because it should detect even small objects disassembled. Radar cross-section (RCS) is a measure of how detectable an object is with a radar. Some RCS measurement results for vehicles have been reported for 24GHz and 77GHz. However, these reports make no mention of the frequency chara...Show More
Short-range detection and measurement of small high-speed objects in microwave frequency region
2007 70th ARFTG Microwave Measurement Conference (ARFTG)
Year: 2007 | Conference Paper |
Cited by: Papers (3)
Systems of active defense of vehicles or buildings are based on detection and measurement of potentially dangerous anti-armor missiles. Radar measurement of these missiles is complicated by their usually very low radar cross-section (RCS) values. Knowledge of RCS values plays crucial role in design of reliable detection system. The purpose of this paper is to present first results of 3D electromag...Show More
Two-Positional Measurement of Coordinates of Objects with a Small Radar Cross-Section
2019 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)
Year: 2019 | Conference Paper |
Cited by: Papers (2)
The main features of detection of air small objects are defined. The structure of the two-position radar system for detecting and determining the coordinates of objects in airspace, as well as direct and indirect methods for assessing the distance to the object are considered. The scheme of measurement in the Cartesian coordinate system by combining information from two radars to improve the accur...Show More
Bi-static Nearfield Calibration for RCS Measurements in the C-V2X Frequency Range
Andreas Schwind;Willi Hofmann;Ralf Stephan;Reiner S. Thomä;Matthias A. Hein
2020 14th European Conference on Antennas and Propagation (EuCAP)
Year: 2020 | Conference Paper |
Cited by: Papers (1)
Automotive radar systems are indispensable for advanced driver assistance systems. Beside existing monostatic millimeter-wave radars, distributed passive radar systems using multi-static constellations provide additional options to augment the radar visibility of road users. Especially radar sensing concepts which use communication signals, like cellular vehicle-to-everything (C-V2X) communication...Show More
Cardiopulmonary Effective Radar Cross Section (ERCS) for Orientation of Sedentary Subject Using Microwave Doppler Radar
Farjana Snigdha;Khaldoon Ishmael;Ryan Neville;Olga Boric-Lubecke
2020 IEEE Asia-Pacific Microwave Conference (APMC)
Year: 2020 | Conference Paper |
Effective radar cross-section (ERCS) for microwave Doppler radar, is defined by the reflected power from sections of the human body that undergo physiological motion. This paper investigates ERCS for human cardiopulmonary motion of sedentary subjects at three different positions (front, back and side with respect to radar). While human breathing and heartbeat can be measured from all four sides of...Show More
An Investigation on the Radar Signatures of Small Consumer Drones
Radar signatures of several small consumer drones are investigated by laboratory measurement. The drones are rotated on a turntable, and backscattered data are collected at two different frequency bands. The data are post-processed into inverse synthetic aperture radar images. The effects of frequency, aspect, polarization, dynamic blade rotation, camera mount, and drone types are presented.Show More
The process of the measurement of the radar cross section of objects using a test range is described in this recommended practice. The term radar cross section (RCS) is defined, and the characteristics of different types of test ranges are given. The responsibilities of the test range operators are shown to involve test and calibration of the measurement range systems and to take the measurements ...Show More
Drone detection by Ku-band battlefield radar
2017 International Conference on Military Technologies (ICMT)
Year: 2017 | Conference Paper |
Cited by: Papers (36)
The intensive research and development efforts in the area of unmanned aerial vehicles (UAV) detection for security applications is observed in the last decade. The published research results are focused on applications in particular domains (e.g. acoustic, ultrasonic, optical, infrared, radiofrequency…) whereas the probability characteristics for each assumed application evaluation are needed. Th...Show More
The radar cross section (RCS) of fixed-wing UAV is important to radar detection of the UAV. And the inverse synthetic aperture radar (ISAR) images in different polarization modes provide information on which features of the UAV are mainly responsible for the radar response. In this paper, we carry out an experiment to measure the fully polarimetric radar returns of the fixed-wing UAV in anechoic c...Show More
Monostatic RCS measurements of a passenger car mock-up at 77 GHz frequency in virtual environment
Sreehari Buddappagari Jayapal Gowdu;Andreas Schwind;Ralf Stephan;Matthias A. Hein
The radar cross-section of a target is a critical parameter for evaluating the performance of an automotive radar in terms of target detection, discrimination, and tracking. Furthermore, it has to be emulated accurately when applied in an over-the-air radar sensor validation methodology in a hardware-in-the-loop approach. Therefore, it is essential to study the RCS patterns of traffic participants...Show More
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