SU492829A1

SU492829A1 - Automatic radio compass

Info

Publication number: SU492829A1
Application number: SU1676338A
Authority: SU
Inventors: Арон Барухович Бухман; Игорь Львович Янушкевич
Original assignee: Предприятие П/Я В-8185
Priority date: 1971-07-09
Filing date: 1971-07-09
Publication date: 1975-11-25

Description

II

Изобретение относитс к радиопеленгации ь УКВ - ДЦВ диапазонах, в частности к радиокомпасам предназначенным дл при. вода средств поиска и спасени аа аварийные радиома ки членов экипажей самолетов (кораблей), потерпевших аварию (кораблекрушение ).The invention relates to radio direction finding in the VHF - DHV bands, in particular to radio compasses intended for use with. water search and rescue aa emergency radio ki crew members of aircraft (ships), crashed (shipwrecked).

Известен УКВ - ДЦВ автоматический pa iOKOhAnac, который содержит двухканальный приемник с блоком автоподстройки час- тоты (АПЧ) общего гетеродина.Known VHF - DTSV automatic pa iOKOhAnac, which contains a two-channel receiver with an automatic frequency control unit (AFC) common local oscillator.

Один канал - опорный, работает от направленной антенны и управл ет блоком АПЧ Второй каноп - пеленгационный, работает по схеме обычного радиокомпаса со след щим приводом. При этом второй канал, полезный сигнал которого нтске уровн шумов, подстраиваетс блоком АПЧ от более сильного сигнала с опорного канала.One channel is a reference one, operates from a directional antenna, and controls a control unit of the Second Canoprop - direction-finding unit, operates according to the conventional radio compass circuit with a tracking drive. At the same time, the second channel, the useful signal of which is in the noise level, is adjusted by the AFC unit from a stronger signal from the reference channel.

Однако известный радиокомпас работает 1 хшько от непрерывных сигналов.However, the known radio compass operates 1 x from continuous signals.

Тем не менее, в р де случаев возникает необходимость пеленгации сигналов импульсных экономичных ма ков, работающих с болшой скважностью.However, in a number of cases, it is necessary to find the signals of pulsed, energy-saving beacons that work with a large duty cycle.

Целью изобрютени вл етс обеспечение работы радиокомпаса по импульсным сигналам и реализаци чувствительности, близ- кой к потенциальной.The purpose of the image is to ensure the operation of the radio compass by pulsed signals and the realization of sensitivity close to the potential one.

.Цд этого между выходом приемника комiiacHoro канала и входом управл ющего усилител включен элемент совпадени , второй вход которого подключен к выходу блока дл формировани стробирующих импульсов опорного канала.By this, between the receiver output of the com- mioHoro channel and the input of the control amplifier is a matching element, the second input of which is connected to the output of the unit to form the strobe pulses of the reference channel.

Изобретение по снено чертежами.The invention is illustrated in the drawings.

На фиг. 1 приведена структурна электрическа сэсема радиокомпаса: на фиг. 2 - врюменные диаграммы.FIG. 1 shows the structural electrical secema of a radio compass: FIG. 2 - vryumenny diagrams.

Автоматический радиокомпас содержит ненаправленную антенну 1, приемник 2, блок 3 дл формировани стробируюших импульсов и компасный канал, состо щий из направленной антенны 4, приемника 5, элемента совпадени 6, импульсного управл ющего усилител 7, двигател 8, поворачивающего антенну 4.The automatic radio compass contains an omnidirectional antenna 1, a receiver 2, a unit 3 for generating gating pulses and a compass channel consisting of a directional antenna 4, a receiver 5, an element of coincidence 6, a pulsed control amplifier 7, an engine 8 turning an antenna 4.

Claims

The radio compass operates as follows. The sigkal of the pulsed beacon receives simultaneously an omnidirectional antenna 1 and a directional antenna 4. The signal in the incoming 11 window (Nka 2 will significantly transmit the noise level, and the signal at the receiver’s output will be at or below the noise level). Lar the height of the omnidirectional antenna 1 conducts the effective height of the antenna 4 to 20 - 30 p. The signal from the output of the receiver 2 goes to block 3 to form 5 gated pulses (see fig. 2.0.) equal in duration to the received (with l fig. , 2,) f which are served on the element:: t matches 6. a simultaneous coincidence 6 th element signal from the output of the receiver (see. FIG. 2b) kompasnog) channel. ; Match Element 6 skips the ip; If a signal is used, modulated by an amplitude with an error mismatch for example, laziness (see, d) at radio k. This ci g cat is fed to a control impulse :: amplifier 7, which converts it into a voltage controlling the motor 8 antennas 4. Motor 8 turns ai tenn 4 in the direction of the signal, with this error signal becomes NI zero and the antenna stops in this position. When gating, only the useful signal is transmitted. The pulsed noise signal in the interval between useful pulses is turned off and does not affect the radio compass, which makes it possible to realize a radio compass sensitivity close to the potential one. Claims of the invention: An automatic radio compass comprising a reference channel consisting of a series-connected non-directional anTeHHbi, receiver, a unit for generating plowing pulses, and a compass channel containing a directional antenna, a receiver, an amplifier, to the output of which is connected a motor turning the antenna, characterized by in order to ensure the operation of the radio compass by impulse signals and the realization of sensitivity, close to the potential, between the output of the compass receiver ka-. A matching element is included in the input and the control amplifier input, the second input of which is connected to the output of the unit for generating gate pulses of the reference channel.

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