SU767815A1 - Radio signal simulator - Google Patents

Description

(54) RADIO SIMULATOR

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The invention relates to devices for training operators working with radio equipment, which ensures safe driving of vehicles, and can be used in radio navigation simulators for determining the location of objects from received signals of radio navigation stations.

A radio signal simulator is known, comprising a master oscillator connected to a signal conditioner, one input of which is connected to a control unit, an output unit connected to a signal parameter meter 1 through a test unit.

The disadvantage of the device is the low efficiency of training.

The purpose of the invention is to increase the efficiency of learning by imitating signals controlling the additional parameters of radio equipment.

Set Goal Achieved by the fact that the simulator has a block for setting the ratio of amplitudes of the main and auxiliary signals, the meter for the ratio of the amplitudes of the main and additional signals, the signal conditioner consisting of

the drivers of the main and auxiliary simulated signals, while the outputs of both drivers through the unit for setting the amplitude ratio of the main and auxiliary signals are connected to the output unit, and the output of the test unit is also connected to the meter for the ratio of the amplitudes of the main and auxiliary signals.

FIG. 1 shows a functional diagram of the proposed device; in fig. 2 -

10 is an example of implementation on known elements of a simulated signal generator on a splitter counter with a controlled division factor; in fig. 3 - functional device diagram.

The device contains the master oscillator 1, the driver 2 of the main simulated signal, the driver 3 of the additional simulated signal, block 4 specifying the ratio of the amplitudes of the main and additional signals, the output block

20 5, test block 6, signal meter 7, meter 8 ratios of the amplitudes of the main and auxiliary signals, control block 9, triggers 10 (counter bits) logic 11 AND, decoder 12, digital computer 13 DVR, instructor panel 14, counter 15, a register 16, a pulse former 17, a receiving device 18 of the Laurent navigation system 18. The device works as follows. The signal of the master oscillator I is fed to the shapers 2 and 3 of the main and additional simulated signals of different frequencies. These signals are sent to block 4 by setting the amplitude ratio of the main and additional simulated signals, in which the required ratio is established, for example 1: 5 of the signals indicated, after which the signals are sent to output block 5, where they are mixed, in block 5 it is set, for example, attenuators, the output signal level required for the operation of the tested unit 6, i.e., obviously higher than the noise level of the device. The resulting complex signal is applied to the test unit 6, in which the operator works, who, using the device's adjustment elements, adjusts the notch filters and noise suppressors of the device under test so as to maximally attenuate the larger additional simulated signal. In this case, if the parameters of the device meet the requirements imposed on it, and the operator correctly performs the adjustment, then the additional simulated signal is attenuated by a certain number of times, for example, 25 times, i.e. the ratio of the main and auxiliary signals changes and becomes equal to 5: 1, instead of 1: 5 ratio. This change is recorded by the meter 8 of the ratio of the amplitudes of the main and additional simulated signals, and the meter 7 parameters of one (several) of the simulated CDGs are used to measure the required parameter of the main signal (amplitude, phase of the time position). The operation modes of the blocks are set by the signals of the control block 9. In this case, the comparison of the measurement results of the ratio of simulated signals before and after the operator’s action unambiguously characterizes

Claims (1)

Phi2. / Both the work of the nodes of the tested equipment and the correctness of the operator's actions. The implementation of the proposed device does not present technical difficulties. As a simulator of simulated signals, for example, a frequency divider with a controllable division factor (Fig. 2) can be used, in which the desired output frequency is set by applying the code of the corresponding number to the control inputs of the logic circuits 11 And, when it occurs The trigger 10 of the splitter counter of a given final state at the output of the decoder 12 generates a setup pulse, which arrives at the second inputs of the circuits 11 And with the last output on the triggers 10, the setup signal arrives similar conditions corresponding to the control code. An RF signal simulator containing a master oscillator connected to a signal conditioner, one input of which is connected to a control unit, an output unit connected through a test unit to a signal parameter meter, characterized in that, in order to increase the efficiency of learning by simulating control signals additional parameters of the radio equipment, it has a block for setting the amplitude ratio of the main and auxiliary signals, an amplitude ratio indicator for the main and additional signals The driver of the signal generator consists of the drivers of the main and additional simulated signals, while the outputs of both drivers through the unit specifying the amplitude of the main and auxiliary signals are connected to the output unit, and the output of the test unit is also connected to the meter of the ratio of the amplitudes of the main and additional signals , Sources of information taken into account in the examination 1. US patent No. 3665086, cl. 35-10.2, 1972.  I L out g   (sr9 R I9 Fiz. d - I Fi2.9. one g