DE1941268C

DE1941268C - Radar antenna arrangement with primary radar antenna and two secondary radar antennas as well as sidelobes query or response underprinting

Info

Publication number: DE1941268C
Authority: DE
Inventors: Peter Dipl Ing 8000 München Honold
Original assignee: Siemens AG
Current assignee: Siemens AG
Publication date: 1972-11-09

Description

1 9411 941

als Empfangsantenne geschalteten Sekundärradarantenne ein zusätzlicher Strahler und eine Einrichtung zur Nebenkeulen-Antwortunterdrückung auf dem Antwortweg zugeordnet sind.Secondary radar antenna switched as a receiving antenna an additional radiator and sidelobe response suppression device are assigned to the response path.

Eine vorteilhafte Ausführungsform für eine Antennenanordnung nach dar Erfindung mit elektronischer Strahlschwenkung der Primärradarantenne in mindestens einer der Raumrichtungen ergibt sich dann, wenn mindestens auch diejenige Sekundärradarantenne, die in derselben Richtung abtastet, in der die elektronische Abtastung durch die Primärradarantenne erfolgt, in an sich bekannter Weise mit elektronischer Strahlschwenkung arbeitet.An advantageous embodiment for an antenna arrangement according to the invention with electronic Beam pivoting of the primary radar antenna in at least one of the spatial directions results then, if at least that secondary radar antenna that scans in the same direction is in which the electronic scanning is carried out by the primary radar antenna, in a manner known per se electronic beam swivel works.

Die Erfindung wird an Hand zweier Figuren näher erläutert.The invention is explained in more detail on the basis of two figures.

In F i g. 1 ist eine Antennenanordnung nach der Erfindung schematisch dargestellt. Sie besteht aus einer quadratisch geformten Primärradarantenne 1, einer am oberen Rand dieser Antenne ' angebrachten horizontalen Sekundärradarantenne 2 und einer am rechten Rand angebrachten vertikalen Sekundärradarantenne 3, wobei die beiden Sekundärradarantennen 2 und 3 beispielsweise für Freund-Feind-Erkennungszwecke verwendet werden können. Die beiden Sekundärradarantennen 2 und 3 bestehen aus Dipolzeilen, die jeweils einen Fächerstrahl erzeugen, während die Antenne 1 einen Bleistiftstrahl hervorruft. In Fig. 1 is an antenna arrangement according to the invention is shown schematically. it consists of a square-shaped primary radar antenna 1, one attached to the upper edge of this antenna ' horizontal secondary radar antenna 2 and a vertical secondary radar antenna attached to the right edge 3, the two secondary radar antennas 2 and 3, for example, for friend-foe detection purposes can be used. The two secondary radar antennas 2 and 3 consist of dipole lines, each of which generates a fan beam, while the antenna 1 creates a pencil beam.

Fig. 2 zeigt die von den beiden Sekundärradarantennen 2 und 3 erzeugten Fächerstrahlen 4 und 5. von denen der eine horizontal und der andere vertikal liegt. Der horizontale Fächerstrahl S arbeitet beispielsweise für den Sender, so daß über ihn die Abfrage abgestrahlt wird, während über den vertikalen Fächerstrahl 4 die Antwort empfangen wird. Ein komplettes Frage-Antwort-Spiel kommt nur im Überlappungsbereich 6 der beiden idcherstrahlen 4 und 5 zustande, der dann einen Bleistiftstrahl darstellt.Fig. 2 shows that of the two secondary radar antennas 2 and 3 generated fan beams 4 and 5. one of which was horizontal and the other vertical located. The horizontal fan beam S works for the transmitter, for example, so that the query is made via him is emitted while the response is received via the vertical fan beam 4. A Complete question-and-answer game only occurs in the overlap area 6 of the two idcher rays 4 and 5 comes about, which then represents a pencil ray.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

Set up the primary radar antenna and with this via patent claims: rotate a servo-controlled motor synchronously, or you can put them together directly on the axis of rotation

1. Arrange radar antenna assembly with a one with the primary radar antenna. In particular Pencil-shaped radiation pattern when retrofitting primary radar antennas send primary radar antenna and with two lead-shaped radiation characteristics additional, especially for retrofitting a secondary radar antenna, are available from constructive Electronically scanning primary radar antenna for reasons often only the edge zones of the primary radar, for example square dimensions provided, antenna available.

attached to the edge zones, elongated and io A known arrangement consists, for. B. from each

each an approximately horizontal or. vertical of a dipole line for secondary radar at the top or

Second lower and at one of the lateral edges of the secondary beam characteristic having

därradar antennas, which are set up so that primary radar antenna. The two additional surcharges

a common därradar antennas for the two fan beams each generate a fan beam. the

Overlapping space arises, as well as with the unification of the two fan beams

additional emitters and devices for the acquired target data happens with the known

Suppress sidelobe A * questions or answers either by switching between the

on the query or response path, fan beams or is between one another

characterized in that in inherent sampling periods with multi-channel reception

As is well known, one of the two secondary catchers is provided in the "monopulse" mode.

radar antennas (3) can only be removed as transmitting antennas. Both known methods require jc-

radiation of the query signals and the other a considerable technical effort.

Secondary radar antenna (2) only as reception- Also from »Aviation Weck & Space

tenne is intended for the response signals and Technology «, 81 (19C4), 17 (Oct. 26), pp. 88 to 91.

that both the 35 connected as a transmitting antenna a two-dimensional radar scanning method is known,

Secondary radar antennas (3) an additional beam by means of two crossed fan beams that

ler and a device for sidelobe-ab- are generated by two antennas, in the overlap-

frageunterrückui.g a pencil beam is generated on the query path as well as pungsbereich,

the secondary, which is shielded as a receiving antenna, that the one fan beam when transmitting and the other

radar antenna (2) an additional radiator and 3 ° which fan beam is used for receiving,

a device for sidelobe response under the secondary radar method there is the possibility

are assigned to pressing on the response path. speed. the inevitable side lobes of the antenna

2. Radar antenna arrangement according to claim 1, characteristic by special measures to unterbei that push the primary radar antenna at least in. There are in this context for one of the two spatial directions electronically 35 the interrogation direction two methods, namely the scans, characterized in that at least the double-pulse and the triple-pulse method. the also the secondary radar antenna (3, 2), the basic principles of both methods for the neighbor scans in the same direction in which the elec- tric tip suppression are the same as in the Electronic scanning by the primary radar transmitted by the ground station interrogation pulse antenna (1) takes place in a manner known per se 40 group one emitted by a special emitter electronic beam swivel works. The reference or control pulse is included. This

Control pulse is used in the response device to distinguish whether the request is from a sub-segment

or from the main radiation lobe of the interrogation

45 advice comes from. From U.S. Patent 3,387,299 it is also known to use an input for a secondary radar antenna connected as a receiving antenna

The invention relates to a radar direction for sidelobe suppression on the Antenna arrangement to provide a pencil-shaped response path.

Primary radar having radiation characteristics and with two additional secondary radar antenna retrofitting, especially equipped for suppression an electronically scanning primary array are created, which in the combined radar cnnc with approximately square dimensions' work reliably and with a primary radar antenna provided, attached to the edge zones, works flawlessly lengthways, with a pencil-shaped beam borrowed and in each case a roughly horizontal or, as in the case of the primary radar antenna, a simple central vertical Sc- tcln having fan-beam characteristics with little space requirement for the antennas, which are so arranged that there is witness.

for tlie two fan beams eir, common upper- According to the invention, which relates to a raclaran-

Schneidungsraiim is created, as well as irradiating with additional antenna arrangement of the type mentioned and devices for sidelobe extraction 60, this is achieved in that in per se question- or -Anlwortunlerclrückung on the query- known way the one of the two Sckundärraclarb / .w. Aivtwortweg. antennen as a transmitting antenna for the radiation of the

Ik-i of the "integration" of primary radar systems, interrogation signals and the other secondary radar antenna with a secondary system, among other things, the problem of synchronizing the antenna is seen only as a receiving antenna for the response signals and that both the antenna and the transmitting antenna are angle tier l ' and the secondary radar antenna connected to an additional riid;> ^r anlcnnc. You can either use the antenna radiator and a device for sidelobe Abfür in the: secondary radar circular search separately from the questioning suppression on the interrogation path as well as the