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Configurable Pseudo Noise Radar Imaging System Enabling Synchronous MIMO Channel Extension.

Niklas Bräunlich¹, Christoph W Wagner^1,2, Jürgen Sachs^1,3

¹Electronic Measurements and Signal Processing Group, Technische Universität Ilmenau, 98693 Ilmenau, Germany.

Sensors (Basel, Switzerland)

|March 11, 2023

Summary

This study introduces an adaptable, scalable ultra-wideband (UWB) radar system using pseudo-random noise (PRN) sequences for diverse microwave imaging. The system offers enhanced synchronization and hardware customization for applications like mine detection and medical imaging.

Keywords:

PN radar Red Pitaya multichannel sensing synchronous MIMO system architecture ultra-wideband

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Area of Science:

* Electrical Engineering
* Radar Systems Engineering
* Signal Processing

Background:

* Ultra-wideband (UWB) radar systems are crucial for various short-range imaging applications.
* Existing UWB radar designs often lack user-adaptability and multichannel scalability.
* Precise synchronization is critical for advanced radar imaging, especially in multichannel configurations.

Purpose of the Study:

* To propose an evolved system design for UWB radar based on pseudo-random noise (PRN) sequences.
* To develop a user-adaptable and multichannel scalable radar system for microwave imaging.
* To present an advanced system architecture with a focus on synchronization and clocking for applications like mine detection, NDT, and medical imaging.

Main Methods:

* Implementation of adaptive hardware, including variable clock generators/dividers and programmable PRN generators.
* Utilization of an open-source framework with the Red Pitaya® data acquisition platform for signal processing customization.
* Development of a fully synchronized multichannel radar imaging system.

Main Results:

* A prototype UWB radar system was benchmarked for signal-to-noise ratio (SNR), jitter, and synchronization stability.
* Achievable performance metrics of the implemented prototype system were determined.
* The system demonstrated user-adaptability and multichannel scalability for targeted imaging applications.

Conclusions:

* The proposed evolved system design offers significant advancements in UWB radar technology.
* The implemented synchronization mechanism and clocking scheme ensure high performance for multichannel imaging.
* Future development will focus on further performance improvements and expanded applications.