Method for the in-line measurement of background noise for MTI radar with suppression of samples not originating from noise, and digital device embodying said method

摘要

A method is provided for the automatic in-line mea­surement of background noise for MTI radar with au­tomatic suppression of samples not originating from noise. The background noise level is determined by making use of summing and scaling operations only, and the suppression of samples not originating from noise is obtained by utilizing the information de­rived from a normal radar detector so that samples identified as true targets shall not contribute to the calculation of background noise level.;The device (17) for carrying out said method com­prises a multiplexer circuit (22), a first scaling circuit (23), a storage element (24), a second scal­ing circuit (25), an inverter (21), and a counter (26).