DE4026390C1 - Short wave direction finder - derives output signals for left and right rotating polarisation for comparison at same time from two different antennae - Google Patents

Short wave direction finder - derives output signals for left and right rotating polarisation for comparison at same time from two different antennae

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Publication number
DE4026390C1
DE4026390C1 DE19904026390 DE4026390A DE4026390C1 DE 4026390 C1 DE4026390 C1 DE 4026390C1 DE 19904026390 DE19904026390 DE 19904026390 DE 4026390 A DE4026390 A DE 4026390A DE 4026390 C1 DE4026390 C1 DE 4026390C1
Authority
DE
Germany
Prior art keywords
output signals
handed
comparison
direction finder
antennas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE19904026390
Other languages
German (de)
Inventor
Bernhard Dipl.-Ing. 8080 Emmering De Henkel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rohde and Schwarz GmbH and Co KG
Original Assignee
Rohde and Schwarz GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rohde and Schwarz GmbH and Co KG filed Critical Rohde and Schwarz GmbH and Co KG
Priority to DE19904026390 priority Critical patent/DE4026390C1/en
Application granted granted Critical
Publication of DE4026390C1 publication Critical patent/DE4026390C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/04—Details
    • G01S3/08—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/52—Systems for determining direction or deviation from predetermined direction using a receiving antenna moving, or appearing to move, in a cyclic path to produce a Doppler variation of frequency of the received signal
    • G01S3/54—Systems for determining direction or deviation from predetermined direction using a receiving antenna moving, or appearing to move, in a cyclic path to produce a Doppler variation of frequency of the received signal the apparent movement of the antenna being produced by coupling the receiver cyclically and sequentially to each of several fixed spaced antennas

Abstract

Several antenna elements (1,2) are switched between left and right rotating polarisation directions. A level comparison device (7) compares the signals for the two polarisation rotations, allowing the highest level to be selected for evaluation. The level comparison device compares the output signals for left and right polarisation rotation obtained simultaneously from two different antenna elements. ADVANTAGE - Copes with transmission signals with gaps or telegraph codes.

Description

Die Erfindung betrifft eine Hochfrequenz-Peileinrichtung laut Oberbegriff des Hauptanspruches.The invention relates to a high-frequency direction finder according to the preamble of the main claim.

Eine Peileinrichtung dieser Art ist bekannt (DE 30 16 951). In der Pegelvergleichseinrichtung werden bei dieser bekannten Peileinrichtung jeweils Peilsignale verglichen, die zeitlich nacheinander für unterschiedliche Polarisation erzeugt sind. Mit einem Vergleich von zeit­ lich aufeinanderfolgenden Signalen ist jedoch eine optimale Peilung nur von längere Zeit empfangenen Signalen möglich, nicht jedoch von Kurzzeitsignalen.A bearing device of this type is known (DE 30 16 951). In the level comparison device in this known direction finder direction finding signals compared that successively for different times Polarization are generated. With a comparison of time However, consecutive signals is one optimal bearing only from signals received for a long time possible, but not of short-term signals.

Es ist daher Aufgabe der Erfindung, eine Hochfre­ quenz-Peileinrichtung der eingangs erwähnten Art so weiterzubilden und zu verbessern, daß mit ihr auch Sendersignale mit Lücken oder Telegrafiezeichen einwand­ frei gepeilt werden können.It is therefore an object of the invention, a Hochfre quenz direction finder of the type mentioned above to train and improve that with her too Transmitter signals with gaps or telegraph characters can be freely located.

Diese Aufgabe wird ausgehend von einer Hochfrequenz-Peil­ einrichtung laut Oberbegriff des Hauptanspruches erfindungsgemäß durch dessen kennzeichnende Merkmale gelöst. Eine vorteilhafte Weiterbildung ergibt sich aus dem Unteranspruch.This task is based on a radio frequency direction finder device according to the preamble of the main claim according to the invention solved by its characteristic features. An advantageous one Further training results from the subclaim.

Bei der erfindungsgemäßen Peileinrichtung erfolgt der Vergleich von zeitgleich auftretenden Peilsignalen; die zu vergleichenden Signale für linksdrehende und rechts­ drehende Polarisation werden von zwei unterschiedlichen Antennen gewonnen. Damit ist es möglich, auch Sender­ signale mit Lücken oder Telegrafiezeichen einwandfrei zu peilen, da der Vergleich zeitgleich mit dem Empfang der Peilsignale erfolgt und damit der Drehsinn sämtlicher Peilantennen entsprechend schnell umgeschaltet werden kann, so daß auch Kurzzeitsignale mit optimalen Empfangs­ bedingungen gepeilt werden können.In the direction finding device according to the invention, the  Comparison of direction finding signals occurring at the same time; the signals to be compared for left-handed and right-handed rotating polarization are of two different ones Antennas won. It is also possible to use transmitters signals with gaps or telegraphy signs perfectly to bear, since the comparison coincides with the receipt the direction-finding signals and thus the direction of rotation of all DF antennas can be switched accordingly quickly can, so that even short-term signals with optimal reception conditions can be taken.

Dieses Prinzip kann nicht nur zur automa­ tischen Erkennung der Drehrichtung von zirkularer Polari­ sation einer Peilantenne benutzt werden, sondern könnte in gleicher Weise auch bei einem Peilsystem benutzt wer­ den, dessen Peilantenne zwischen linearer horizontaler und linearer vertikaler Polarisation umschaltbar ist. Es kann damit dann erkannt werden, ob das horizontale oder vertikale Antennensystem jeweils den größeren Empfangspegel liefert.This principle cannot only be used for automa table detection of the direction of rotation of circular polaris tion of a DF antenna, but could be used in the same way who uses a DF system the, whose DF antenna is between linear horizontal and linear vertical polarization is switchable. It can then be recognized whether the horizontal or vertical antenna system each the larger Receiving level provides.

Die Erfindung wird im folgenden anhand einer schematischen Zeichnung an einem Ausführungsbeispiel näher erläutert.The invention is based on a schematic Drawing explained in more detail using an exemplary embodiment.

Die Figur zeigt den Prinzipaufbau eines Kurzwellen-Pei­ lers, wie er beispielsweise in dem Datenblatt "HF-Dopp­ ler-Peiler PA 010" der Firma Rohde & Schwarz beschrieben ist. Dieser Peiler besteht aus einem Kreis von Kreuz­ rahmenantennen 1, von denen der Übersichtlichkeit halber nur einige dargestellt sind, sowie einer im Kreismittel­ punkt angeordneten Kreuzrahmenantenne 2 als Bezugsantenne. Diese Kreuzrahmenantennen 1, 2 sind in bekannter Weise aus zwei gekreuzten Rahmenhälften aufgebaut, die in einem 90° Hybrid und Addiernetzwerk 3 zusammengeschaltet sind. Über dieses Hybrid 3 kann der Drehsinn der zirkularen Polarisation der Kreuzrahmenantenne umgeschaltet werden. Die Kreuzrahmenantennen 1, 2 sind mit einem Peilgerät 4 zusammengeschaltet, das über ein Steuergerät 5 gesteuert ist. Der im Peilgerät ermittelte Peilwert wird über eine Schalteinrichtung 8 einer Auswerteinrichtung 6 zugeführt.The figure shows the basic structure of a shortwave peer, as described, for example, in the data sheet "HF Dopp ler direction finder PA 010" from Rohde & Schwarz. This direction finder consists of a circle of cross-frame antennas 1 , of which only a few are shown for the sake of clarity, and a cross-frame antenna 2 arranged in the center of the circle as a reference antenna. These cross-frame antennas 1 , 2 are constructed in a known manner from two crossed frame halves, which are interconnected in a 90 ° hybrid and adding network 3 . This hybrid 3 can be used to switch the direction of rotation of the circular polarization of the cross-frame antenna. The cross-frame antennas 1 , 2 are connected to a direction finder 4 , which is controlled by a control unit 5 . The bearing value determined in the direction finder device is fed to an evaluation device 6 via a switching device 8 .

Dem Peilgerät 4 ist eine Pegelvergleichseinrichtung 7 zugeordnet, in welcher die Ausgangssignale von zwei verschiedenen Peilantennen miteinander verglichen werden, beispielsweise das momentane Ausgangssignal der Referenz­ antenne 2 und das momentane Ausgangssignal einer der Peilantennen 1. So kann beispielsweise eine der Peil­ antennen 1 auf linksdrehende zirkulare Polarisation und gleichzeitig die Referenzantenne 2 auf rechtsdrehende zirkulare Polarisation geschaltet sein, in der Pegelver­ gleichseinrichtung 7 wird dann festgestellt, welche dieser beiden Antennen das größere Ausgangssignal liefert. Über die Wirkverbindungen 9, 10, 11 und 12 steuert dann die Vergleichseinrichtung 7 sowohl die Referenzantenne 2 als auch die übrigen Peilantennen 1 so, daß alle Antennen 1 und 2 auf denjenigen Drehsinn der Polarisation für die eigentliche Peilwertermittlung umgeschaltet sind, der das Ausgangssignal mit dem größeren Pegel liefert. Mit einer solchen Peileinrichtung können daher auch Sender mit Lücken oder Telegrafiezeichen einwandfrei gepeilt werden, die Ermittlung des die optimalen Ergebnisse liefernden Drehsinnes kann wesentlich schneller durch­ geführt werden als bei einem zeitlich hintereinander erfolgenden Vergleich der Ausgangssignale einer einzigen Antenne.The direction finder 4 is assigned a level comparison device 7 , in which the output signals from two different DF antennas are compared, for example the current output signal of the reference antenna 2 and the current output signal of one of the DF antennas 1 . For example, one of the DF antennas 1 can be switched to left-handed circular polarization and at the same time the reference antenna 2 can be switched to right-handed circular polarization. In the level comparison device 7 it is then determined which of these two antennas delivers the larger output signal. About the active connections 9 , 10 , 11 and 12 , the comparison device 7 controls both the reference antenna 2 and the other DF antennas 1 so that all antennas 1 and 2 are switched to the direction of polarization for the actual DF value determination, which the output signal with the provides greater levels. With such a direction finder, transmitters with gaps or telegraph characters can therefore be flawlessly found, the determination of the direction of rotation providing the optimal results can be carried out much faster than when comparing the output signals of a single antenna in succession.

Claims (2)

1. Hochfrequenz-Peileinrichtung, insbesondere für Kurz­ welle, mit mehreren zwischen linksdrehender und rechtsdrehender zirkularer Polarisation umschaltbaren Peilantennen sowie mit einer Pegelvergleichseinrich­ tung, in welcher die Ausgangssignale für linksdrehende und rechtsdrehende Polarisation miteinander verglichen werden, so daß nur der dem Ausgangssignal mit dem größeren Pegel zugehörige Peilwert des Peilgerätes an die Auswerteinrichtung weitergegeben wird, dadurch gekennzeichnet, daß die in der Pegel­ vergleichseinrichtung (7) miteinander verglichenen Ausgangssignale für linksdrehende und rechtsdrehende Polarisation zeitgleich von zwei unterschiedlichen Antennen (z. B. 1 und 2) gewonnen sind.1.High-frequency direction finding device, in particular for short waves, with several direction-finding antennas that can be switched between left-handed and right-handed circular polarization, and with a level comparison device in which the output signals for left-handed and right-handed polarization are compared, so that only the output signal with the higher level The associated bearing value of the direction finder device is passed on to the evaluation device, characterized in that the output signals for left-handed and right-handed polarization compared in the level comparing device ( 7 ) are obtained simultaneously from two different antennas (e.g. 1 and 2 ). 2. Hochfrequenz-Peileinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß mittels der Pegel­ vergleichsreinrichtung (7) die Peilantennen (1, 2) auf die das Ausgangssignal mit dem größeren Pegel ergebende Drehrichtung geschaltet sind und damit im Peilgerät (4) nur der zugehörige Peilwert ermittelt ist.2. High-frequency DF device according to claim 1, characterized in that by means of the level comparator ( 7 ) the DF antennas ( 1 , 2 ) are switched to the direction of rotation resulting in the output signal with the higher level and thus only the associated DF value in the DF device ( 4 ) is determined.
DE19904026390 1990-08-21 1990-08-21 Short wave direction finder - derives output signals for left and right rotating polarisation for comparison at same time from two different antennae Expired - Lifetime DE4026390C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904026390 DE4026390C1 (en) 1990-08-21 1990-08-21 Short wave direction finder - derives output signals for left and right rotating polarisation for comparison at same time from two different antennae

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904026390 DE4026390C1 (en) 1990-08-21 1990-08-21 Short wave direction finder - derives output signals for left and right rotating polarisation for comparison at same time from two different antennae

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DE4026390C1 true DE4026390C1 (en) 1992-01-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2702102C1 (en) * 2018-10-15 2019-10-04 федеральное государственное казенное военное образовательное учреждение высшего образования "Военная академия связи имени Маршала Советского Союза С.М. Буденного" Министерства обороны Российской Федерации Method for polarization direction finding of radio signals using a tri-orthogonal antenna system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359555A (en) * 1966-08-30 1967-12-19 Ralph E Taylor Polarization diversity monopulse tracking receiver
DE3016951C2 (en) * 1980-05-02 1982-04-01 Rohde & Schwarz GmbH & Co KG, 8000 München Doppler direction finder
DE3211435A1 (en) * 1982-03-27 1984-07-26 Rohde & Schwarz GmbH & Co KG, 8000 München Radio direction finder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359555A (en) * 1966-08-30 1967-12-19 Ralph E Taylor Polarization diversity monopulse tracking receiver
DE3016951C2 (en) * 1980-05-02 1982-04-01 Rohde & Schwarz GmbH & Co KG, 8000 München Doppler direction finder
DE3211435A1 (en) * 1982-03-27 1984-07-26 Rohde & Schwarz GmbH & Co KG, 8000 München Radio direction finder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Rohde & Schwarz: HF-DOPPLER-PEILER PA 010. Circa 1982, (Datenblatt N6-304, D-1)- Firmen- schrift *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2702102C1 (en) * 2018-10-15 2019-10-04 федеральное государственное казенное военное образовательное учреждение высшего образования "Военная академия связи имени Маршала Советского Союза С.М. Буденного" Министерства обороны Российской Федерации Method for polarization direction finding of radio signals using a tri-orthogonal antenna system

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D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition