A METHOD OF EXTRACTING JITTER PRI PULSETRAIN OF RADAR SIGNAL USING ADAPTIVE HISTOGRAM, AND A APPARATUS OF EXTRACTING JITTER PRI PULSETRAIN OF RADAR SIGNAL USING THE SAME

摘要

PURPOSE: A method and a device for extracting a radar signal jitter pulse repetition interval (PRI) pulse train using an adaptive histogram are provided to improve the detection accuracy of a radar signal in a high density multiple signal environment and to be applied to various electronic warfare systems necessary to be analyzed in signals. CONSTITUTION: A signal receiving part (10) comprises an antenna for sensing a radar signal. The signal receiving part processes the signal detected by the antenna and transmits the signal to a control part (20). The control part is classified into a histogram generation module (22), a candidate list setting module (24), a histogram extension module (25), an extraction threshold comparing module (26), and a jitter PRI pulse train extraction module (28). The histogram generation module generates a histogram using the difference between a set disparity and the time of arrival (TOA). The candidate list setting module selects a Bin which exceeds a pre-set candidate threshold among a histogram Bin and sets the Bin as a candidate list. The histogram extension module merges the histogram Bin in order to choose PRI for extraction using the candidate list. The extraction threshold comparing module compares the stored candidate list with the extracted threshold to determine whether to extract or not. The jitter PRI pulse train extraction module restarts the control operation by confirming the number of pulses remained after the extraction is greater than the jitter PRI pulse train accreditation number and increasing degree. [Reference numerals] (10) Receiving unit; (20) Control unit; (22) Histogram generation module; (24) Candidate list setting module; (25) Histogram expansion module; (26) Extraction threshold comparing module; (28) Jitter PRI pulse train extraction module