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        For the lidar signal detection in a radar warning receiver (RWR) very simple design solutions like a single-limit comparator after the input amplifier are often used. Further processing is conducted with the help of the built-in processor, which uses only the values of time intervals between pulses for the analysis. It is clear that such an approach to the detection problem solving has multiple disadvantages. For example, the comparator output signal has passed a non-linear and irreversible transformation and the pulse amplitude information is lost irreversibly.