SU572910A1 - Selector - Google Patents

Description

(54) SELECTOR DEVICE

one

The invention relates to a pulse technique and can be used in radio systems, in particular, where it is necessary to select a sequence of reflected signals of several transmitters from the general background of the received signals and generate a selection of the signal of each transmitter from the received sequence of reflected signals.

A selector device is known that contains a synchronizer and n selection channels, each of which consists of a threshold limiter, a pulse shaper in amplitude and duration 1J. However, this selector does not allow to select signals that have the same and multiple frequencies of the following and coming from the same object with pre-accurate accuracy.

The purpose of the invention is to increase the noise immunity of the selector device. To do this, in the selector device containing a synchronizer and n selection channels, each of which consists of a threshold limiter, a pulse generator up to amplitude and duration, a delay element, a pulse shaper of range and resolution, an element of coincidence and a selector are entered into each of the l selection channels. over the period. Moreover, the input of the delay element of each selection channel is connected to the synchronizer output, and the output through serially connected pulse shaper in amplitude and duration, the distance and resolution pulse shaper to the first input of the coincidence element, the second input of which is connected to the input terminal of the selector device through a threshold device the output of the match element is connected to the input of the selector by period.

Figure 1 shows a block diagram of the device.

The selector device contains a synchronizer 1 and n selection channels, each of

which includes a series-connected delay element 2, a pulse generator 3 in amplitude and duration, a range and resolution pulse generator 4, a match element 5 and a period selector b. Moreover, the second input element 5 is connected to the output of the threshold limiter 7, the input of which is connected to the input terminal 8 of the selector device, the input of the element 2 is connected to the output of the synchronizer 1, and the second output of the imaging unit 3 is connected to the terminal 9 of the transmitter start of this channel.

construction works as follows. Synchronizer 1 creates a grid of reference

frequencies. Element 2 performs a temporary

shift start transmitter of the channel relative to the start of the transmitter of other channels. Shaper 3 feeds a start pulse to terminal 9. Shaper 4 delays the selector timing pulses by passing the high frequency pulse of the transmitter to the object and back, and also, together with element 5, selects its channel signals from the total amount of pulses received by the receiver and fed to terminal 8 The threshold limiter 7 normalizes the signal in amplitude. The selector 6 registers the channel only after the arrival of three consecutive signals.

Claims (1)

Invention Formula A selector device containing a synchronizer and n selection channels, each of which consists of a threshold limiter, a pulse shaper in amplitude and duration, characterized in that, in order to increase noise immunity, a delay element, a range and resolution pulse shaper, a coincidence element and a selector are added to each of the n selection channels, the input of the delay element of each selection channel is connected to the synchronizer output, and the output through serially connected driver the amplitude and duration pulses, the range and resolution pulse shaper — to the first input of the coincidence element, the second input of which is connected to the input terminal of the selector device through a threshold device, and the output of the coincidence element is connected to the selector input on a period. Information sources, . taken into account during the examination 1. USSR Copyright Certificate №224582, cl. N OZK 5/00, 07.20.67.