Patent RU-94044919-A (RU)
Inventor: EREMIN E I
IPC: H04B1/02
Filed: 1994-12-27
Abstract: FIELD: antenna engineering and radars, can be used in monitoring and test systems of radio aids systems as a simulator of parameters of direction to remote radio-frequency radiation sources. SUBSTANCE: the simulator solves the problem of simulation of several remote radiation sources, with their position being quickly changed in space, at a quick retuning of the signal carrier frequency, and creation in laboratory conditions at minimum dimensions of installations of a scenario of radio electronic situation at the input of the systems under test, which practically cannot be created in the conditions of a testing ground; operation in the near zone in real time is provided due to creation of a wave-front at the output of the simulator radiators by electronic phase control of the signal of each simulated source. To attain the above result, the simulator of radio signal sources, using M radiators, N microwave oscillators, N*M controlled phase shifters, control computer, N couplers, as well as N power dividers cut in between the microwave oscillators and respective controlled phase shifters, has also N control units, each comprising a master oscillator, channel address decoder, phase-shifters control signal conditioner and microwave-oscillators control signal conditioner; the respective inputs of the above conditioners are connected to the outputs of the master oscillator, channel address decoder and via a parallel interface - to the control computer; and the outputs are connected to the control inputs of the respective phase shifters and microwave oscillators; the output of each of N microwave oscillators is connected to the input of the respective power divider, whose total number is also N, and each of M outputs of the power divider is connected to the microwave input of the respective phase shifter, thus forming an N-channel system, whose similar channel inputs, except for the inputs intended for connection of external oscillators, are interconnected in parallel and connected to the respective outputs and buses of the computer interface, and having N*M microwave signal outputs, which via couplers are connected to the respective radiators located in alignment with the antenna elements of the radio electronic station under test at distance, where l - wavelength, and decoupling radio absorbing units are installed between the simulator radiators and radiators of the radio electronic station under test. The phase-shifters control signal conditioner has a timer, processor, address driver, address selection switch, internal storage, data switch, register and gate current amplifiers all connected to one another and to the master oscillator and channel address decoder; the microwave-oscillator control signal conditioner is identical to the phase-shifters control signal conditioner, and the channel address decoder has a switch, comparator, seven AND gates and four OR gates connected to one another and to the computer interface and control units; the master oscillator has a crystal-controlled oscillator, inverter, three AND gates and an OR gate. EFFECT: at forming of a complex multisignal scenario of radio engineering situation a parallel forming of signal parameters and location of individual simulated radio electronic stations are accomplished, with their change in real time. 9 cl, 7 dwg