Limit detection sensitivity analysis and maximum detection height prediction for the photoelectric detection target

Abstract

Photoelectric detection target (PDT) is a kind of non-contact photoelectric detection systems widely used in high-velocity projectile testing for ballistic trajectory measurements. However, invalid measurement data are often acquired during the experiments due to the flying heights of a measured object exceeding its maximum detectable height which is determined by limit detection sensitivity (LDS). As quantitative LDS is difficult to be analyzed and hence the maximum detectable height is usually estimated empirically. Here, we present a model to evaluate the LDS and the maximum detection height in a PDT to ensure the reliability of measurement results. With the model, the maximum detection height of a PDT can be quantitatively predicted for the first time and the LDS can also be analyzed. Experiments are conducted and the predicted maximum detection heights are in good agreement with the experimental results, which verify the effectiveness of the presented model. The proposed method can be used for calculating the LDS and predicting the maximum detection height exactly that ensuring the validity of measurement results.