FM RANGE FINDER OF CONTINUOUS TRACKING WITH FRACTION-DIFFERENTIATING FILTER Russian patent published in 2012 - IPC G01R23/09 

FIELD: radio engineering.

SUBSTANCE: unit of range frequency measurement comprises a mixer connected by inputs to a low pass filter and a generator of weight function signal, which in its turn is connected to a modulator, at the same time the mixer is also connected by its outlet to a fraction-differentiating filter of one second order, and to a compensation delay line, besides, the filter and the delay line are connected by their outlets, with inlets of appropriate quadratic converters, outlets of which are connected to inlets of appropriate circuits of a moving window, response of which is sent to inlets of a converter of A/B type, the outlet of which is connected to an indicator.

EFFECT: capacity of a FM range finder with high accuracy to measure distance, at the same time range measurement should be carried out continuously during tracking, without delay for processing.

3 dwg