JPH0248884U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a radar warning receiver according to an embodiment of this invention, and FIGS.
The figure is a diagram for explaining the operation of an embodiment of this invention, and FIG. 4 is a block diagram showing the configuration of a conventional PWR. In the figure, 1 is a JK flip-flop for switching the counter used, 2 is a counter for measuring the radio wave arrival interval (1
), 3 is the same counter (2), 4 is the reference clock, 5 is the subtraction circuit, 6 is the judgment value memory, 7 is the comparison circuit,
8 is a determination circuit, 9 is an alarm device, 10 is a counter for measuring the continuous reception time of incoming radio waves, 11 is a determination circuit, 1
2 indicates a judgment value memory. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claim for Utility Model Registration] First and second radio wave arrival intervals that alternately measure the radio wave arrival interval in a radar warning receiver that detects whether or not it is in a state of being captured by an opponent's track-weil-scan radar. a measurement counter; a subtraction circuit that calculates the difference between successive radio wave arrival intervals measured by the first and second counters; a comparison circuit that compares the difference between the radio wave arrival intervals with a predetermined value; 1. A radar warning receiver comprising: a determination circuit that determines whether or not an object has been captured by an opponent's track-weil-scan radar based on a comparison result.