How to Conduct CRPA Anti-Jam Antenna Testing

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CRPA Test System
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Validating CRPA Systems Under High-Density NAVWAR Conditions

Controlled reception pattern antennas (CRPAs) are multi-element global navigation satellite systems (GNSS) that enable receivers to maintain reliable positioning, navigation, and timing (PNT) in the presence of jamming and spoofing signals. By analyzing the direction and strength of incoming signals, CRPA electronics can dynamically shape the antenna reception pattern — steering gain toward authentic satellite signals while placing nulls in the direction of jammers and spoofers.

For mission-critical platforms operating in navigation warfare (NAVWAR) environments, validating CRPA performance requires testing that recreates realistic threat conditions so developers can evaluate how well a CRPA-enabled system continues to acquire and track legitimate GNSS signals while suppressing NAVWAR threats. Characterize beamforming and null-steering performance, accelerate system development, and verify that PNT systems maintain signal integrity before deployment in operational environments.

CRPA Anti-Jam Antenna Test Solution

Validating and integrating CRPA systems, also known as anti-jam antennas, requires emulation of thousands of independent GNSS, jamming, and spoofing signals across antenna arrays for up to and beyond 30 antenna elements. Test CRPA electronics with a precise conducted wavefront produced through advanced phase alignment techniques, seamless calibration, and high jamming-to-signal (J/S) power ratios that replicate extreme NAVWAR conditions and ensure valid results. Full-system CRPA validation requires over-the-air testing that incorporates antenna performance, terrain effects, and sustained threat environments using a patented zoned chamber approach.
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