SDAA103 September   2025 IWRL6432AOP

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Angle of Arrival Estimation Theory: FFT Beamformer
    2. 1.2 Angle of Arrival Estimation Theory: Steering Vectors
  5. 2Additional Information
    1. 2.1 Measurement Procedure
    2. 2.2 Testing Results
      1. 2.2.1 Anechoic Chamber Testing on Corner Reflector Targets
      2. 2.2.2 Outdoor Testing on Human Subjects
    3. 2.3 Processing Time
    4. 2.4 Usage
    5. 2.5 Extensions to Other Platforms
  6. 3Summary
  7. 4References
  8. 5Appendix
    1. 5.1 Chirping Parameters for Each Configuration File
    2. 5.2 Point Cloud Data for Human Subject Testing

2.1 Measurement Procedure

To compute the Steering Vector Coefficient Matrix, TI measured the returned phase of the IWRL6432 over multiple PCB designs, units and temperatures. Using a Millibox miniature anechoic chamber and a corner reflector placed at a known distance from the radar, TI rotated the radar devices over a sweep of azimuth and elevation angles, and recorded the returned ADC data at each angle.

Figure 2-1 and Figure 2-2 show the setup that TI used with the radar on one end of the chamber and a corner reflector at the other end.

IWRL6432AOPEVM in Millibox Chamber Figure 2-1 IWRL6432AOPEVM in Millibox Chamber
Corner Reflector at the Opposite End of Millibox Chamber Figure 2-2 Corner Reflector at the Opposite End of Millibox Chamber