| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: continuous non-modulated radio frequency generator is used. A part of its signal, after amplification, is radiated by an antenna via the antenna switch to the surrounding space. If an object is detected using a reflected signal, the closing rate of short-range radar stations of the weapon and the object, using the Doppler frequency is estimated. Another part of the generator signal is modulated to short radio pulses that are then amplified by another amplifier and are radiated to the surrounding space through the same antenna switch. Continuous and pulse radio signals, reflected by the object, are fed to the short-range radar input of the device, allowing to estimate both the distance to the object, and the closing rate. The process of the distance and closing rate measurement is performed within three range gate pulses, formed by the short-range radar. A decision of whether a real target is present is made by the device only if the reflected signal is present in any one from the three or in two adjacent range gate pulses, and the closing rate value corresponds to the estimated one of a real target.EFFECT: higher short range radar immunity to passive interference if no data is present as to the time and location of the real target appearance and relatively short interoperation time with the object detected.2 dwg |
