A Unified Model of Coherent Direction-of-Arrival Simulation for Radar Target Simulators

In order to simulate highly realistic scenarios for modern radar sensors, like traffic scenarios, radar target simulators require the capability to generate targets in all four radar dimensions, which are range, radial velocity, azimuth and elevation angle. To generate targets with angular informati...

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Bibliographic Details
Published in:IEEE transactions on aerospace and electronic systems 2023-08, Vol.59 (4), p.1-6
Main Authors: Schoeder, Pirmin, Janoudi, Vinzenz, Grebner, Timo, Waldschmidt, Christian
Format: Article
Language:English
Subjects:
Angular velocity
Array signal processing
Azimuth
Beamforming
Channel estimation
Coherence
Direction of arrival
Direction-of-arrival estimation
Elevation angle
FMCW radar
propagation
Radar
Radar arrays
Radar targets
Radial velocity
Simulation
Simulators
Software
Solid modeling
target simulator
Target simulators
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Summary:In order to simulate highly realistic scenarios for modern radar sensors, like traffic scenarios, radar target simulators require the capability to generate targets in all four radar dimensions, which are range, radial velocity, azimuth and elevation angle. To generate targets with angular information, coherent direction-of-arrival (DoA) simulation allows a highly accurate and flexible angular simulation, at a minimum of required hardware. In this article a unifying general model for coherent DoA simulation with channel knowledge for radar target simulators is derived. It comprises previous models. We present methods which allow the simulation of arbitrary and adjustable DoAs, without any constraints on the radar array geometry or the implemented beamformer. The proposed models and methods are analytically derived, analyzed by simulations and finally verified by measurements. Lastly, a measurement of a 2D-DoA simulation for a radar with twelve channels is conducted, in order to show the general applicability of the concept.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2023.3240355