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Complementary Design of Two Types of Signals for Avionic Phased-MIMO Weather Radar.

Zhe Geng¹, Ling Wang¹, Fanwang Meng²

¹College of Electronics and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.

Sensors (Basel, Switzerland)

|January 28, 2026

Summary

This study introduces auxiliary antenna arrays for avionic weather radar, enhancing storm detection by mitigating blind zones and suppressing interference using novel signaling strategies.

Keywords:

beamforming phased-MIMO radar sidelobe control waveform design weather radar

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Published on: May 1, 2018

Area of Science:

Aerospace Engineering
Radar Systems
Signal Processing

Background:

Avionic weather radar requires adaptable resolution and elevation coverage for approaching storm cells.
Existing systems face limitations in handling dynamic storm cell characteristics.

Purpose of the Study:

To enhance avionic weather radar capabilities using auxiliary antenna arrays.
To mitigate near-range blind zones and suppress interference during storm detection.

Main Methods:

Addition of four auxiliary antenna (AuxAnt) arrays based on phased-MIMO structure.
Implementation of Type I and Type II signals with distinct subarray configurations and waveform designs.
Employment of adaptive pulse compression for range sidelobe suppression.

Main Results:

Successful mitigation of near-range blind zones using non-overlapping subarray configurations.
Effective suppression of interference through context-aware beampattern design.
Validation of the proposed signaling strategy using real weather data experiments.

Conclusions:

The proposed phased-MIMO based auxiliary antenna system significantly improves avionic weather radar performance.
Novel signaling and adaptive pulse compression techniques enhance storm detection accuracy and reliability.