SAE J3122_202005

This document will provide methodologies and procedures to validate active safety test targets and correlate them to the objects they are intended to represent. This process will be separated into three procedures. The correlation procedure will document a means of measuring representative object characteristics and how to calculate a correlation score for a test target using that objective characteristic measurement. The validation procedure will be utilized to determine the correlation score for the test target. A confirmation procedure will identify unacceptable characteristic deviations of the targets during use in the field. Test targets may include cars, pedestrians, motorcycles, bicycles, or any other object that may be encountered by a vehicle. This document relates only to the radar characteristics of these test targets. Surrogate targets are used throughout the automotive industry to safely and repeatably test active safety systems as well as other vehicle systems. For the test results to be representative of real-world scenarios, the surrogate targets must be representative of the real-world objects that they represent. Existing methods for comparing radar characteristics of objects typically require substantial equipment, time, and facilities. At this point, there is no widely accepted method to verify that a surrogate target has the same characteristics as a real-world object that allows for the use of automotive-grade equipment. Additionally, there is no widely accepted method to verify that the characteristics of a target, which has been in use, are unchanged. This document will provide these procedures.