Abstract: The performance of track-before-detect (TBD) algorithm based on standard Hough Transform is not satisfied due to low detection probability and long elapsed time. For this problem, an Ergodic Hough Transform based TBD method was proposed. The raw radar echo whose amplitude exceeded the first threshold was stored separately and stacked into a data space; all diferent data were combined to calculate line parameter which then was mapped into a parameter space and the amplitude of each paired wae added to an accumulator. All cells whose amplitude exceeded the second threshold was used to estimate the last line parameter and to get the target track. Compared with two other Hough Transform based TBD techniques in simulation, the proposed method can improve the detection probability and consume shorter elapsed time.

Key words: Hough Transfom, threshold, Ergodic, accumulator, linear parameter