DETECTOR OF RADAR SIGNALS Russian patent published in 2004 - IPC

FIELD: radio detection and ranging.

SUBSTANCE: the detector of radar signals is designed for detection of signals of radars of the preset class, warning of illumination and early warning of possible onset of the next session of illumination in the conditions of simultaneous operation of a great number of stations. The detector has a superheterodyne receiver with a cyclic frequency retuning, device for separation of sampled and continuous signals, control device synchronizing the operation of all devices of the detector generating the control voltages for frequency retuning of the heterodyne receiver, forming a code corresponding to the current value of frequency and used for frequency selection of the flow of signals, separation circuit of sampled signals according to the period of repetition of pulses, pulse train separation circuit comparing the periods of repetition of pulse trains and stored in the storage unit, device for identification of the received signal, measuring the duration of the illumination session (T_meas) and comparing it with the preset value (T_preset). At T_meas≥T_preset the alert signal is switched on. The detector has also a command conditioner for switching-on of the early warning, which measures the time between the adjacent illumination sessions (τ_meas), decreases it by the value of lead time (τ_lead), and at the next measurements compares the current time with the decreased one. At τ_meas≥τ_decr the early warning signal is switched on.

EFFECT: enhanced efficiency.

8 dwg