Simulation of air-to-ground ranging mode of airborne monopulse radar over complex terrain

Air-to-ground ranging (AGR) is one of the important operation modes of an airborne monopulse radar system. Here, an approach for the detailed modelling and simulation of the AGR performance of such a radar system over complex terrain is proposed. Time-domain monopulse signals reflected by the terrai...

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Bibliographic Details
Published in:IET radar, sonar & navigation sonar & navigation, 2020-12, Vol.14 (12), p.1991-1999
Main Authors: Rim, Jae-Won, Koh, Il-Suek, Song, Jong-Hwa
Format: Article
Language:English
Subjects:
AGR performance
airborne monopulse radar system
airborne platform
airborne radar
air‐to‐ground ranging mode
antenna beam patterns
clutter properties
complex terrain
detailed modelling
digital elevation model
digital elevation models
filtering theory
important operation modes
modelled monopulse return signals
numerical simulations
operating frequency
pulse repetition time
radar clutter
radar detection
radar signal processing
radar tracking
Research Article
RF specifications
time‐domain monopulse signals
topography (Earth)
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Summary:Air-to-ground ranging (AGR) is one of the important operation modes of an airborne monopulse radar system. Here, an approach for the detailed modelling and simulation of the AGR performance of such a radar system over complex terrain is proposed. Time-domain monopulse signals reflected by the terrain's surface were modelled using the dynamics of the airborne platform, clutter properties, and RF specifications of the radar, which included the operating frequency, antenna beam patterns, and pulse repetition time. The AGR performance was then numerically analysed by employing the modelled monopulse return signals and a digital elevation model of the terrain's surface. Several crucial factors affecting the accuracy of line-of-sight estimation, including shadowing effects and roll stabilisation, were addressed using numerical simulations of various scenarios.
ISSN:1751-8784
1751-8792
DOI:10.1049/iet-rsn.2020.0180