APPARATUS FOR DISTORTING RADAR IMAGE OF OBJECT Russian patent published in 2013 - IPC G01S7/38 G01S13/90 

FIELD: radio engineering, communication.

SUBSTANCE: apparatus for distorting the radar image of an object consists of N-channel receiving and transmitting antenna arrays, a unit for inputting scattering cross-section values of the object, wherein each of the N channels consists of series-connected controlled phase changer, controlled amplifier and a transmitting antenna array component, each of the N channels also has a band-pass filter, first and second phase detectors, first and second analogue-to-digital converters, a computer, first, second and third digital-to-analogue converters, a mixer, as well as a reference generator, a phase changer and a memory device. Outputs of the memory device and the unit for inputting scattering cross-section values are respectively connected to the third and fourth inputs of computers of each channel; the output of the reference generator is connected to the second input of the first phase detector, the second input of the mixer and through the phase changer to the second inputs of the second phase detectors of each channel; wherein the n-th output, where n=1, 2, …, N, of the receiving antenna array is connected through a band-pass filter to the first inputs of the first and second phase detectors of the corresponding channel, the outputs of which are connected through corresponding analogue-to-digital converters to the first and second inputs of the computer of the corresponding channel, first, second and third outputs of which are connected to inputs of corresponding digital-to-analogue converters; the output of the second digital-to-analogue converter is connected to the first input of the mixer, the output of which is connected through the controlled phase changer to the first input of the controlled amplifier; the second input of the controlled phase changer is connected to the output of the third digital-to-analogue converter; the second input of the controlled amplifier is connected to the output of the first digital-to-analogue converter of that channel.

EFFECT: reducing the probability of correct detection of an object to a given average value.

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