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Electromagnetic Environmental Simulation for EW Systems — Part 3
Master AoA calibration with precise multi-channel alignment using vector network analysis.
November 17, 2025
by Rohde & Schwarz
Topics Covered
Radar Warning Receiver (RWR) Installations
Basics of Direction Finding (DF)
Accuracy Considerations and Calibration of An AoA Test Setup
Calibration of an AoA Test Setup with A Vector Network Analyzer
White Paper Overview
Part 3: Angle of Arrival (AoA) Calibration
The third part of the series focuses on Angle of Arrival calibration for radar warning receivers. It compares amplitude and phase direction-finding methods, explains why phase comparison yields higher accuracy, and discusses key factors that influence measurement precision—such as signal-to-noise ratio, phase noise, and temperature drift. The paper also shows how vector network analyzers (VNAs) enable accurate multi-channel calibration across RF ports in complex AoA test setups.
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