File:Monopulseprinzip2.gif
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Summary
| Description |
Deutsch: Stilisiertes Antennendiagramm einer Monopulsantenne: der Differenzkanal besteht praktisch aus zwei schmalen Keulen, die direkt nebeneinander liegen. Die Antennenrichtung hat hier ein Signalminimum. Genau auf diesem Winkel hat aber die nur eine Keule des Summenkanals ihr Maximum. Befindet sich ein Flugzeug genau im Maximum des Summenkanals, dann hat der Differenzkanal kein Signal. Befindet sich ein Flugzeug neben diesem Maximum des Summenkanals, dann hat auch der Differenzkanal ein Signal mit entweder negativem Vorzeichen (also hier rechts vom Maximum) oder positivem Vorzeichen (also links vom Maximum). Die Größe dieses Differenzsignals ist das Maß für die Abweichung vom Maximum des Summenkanals: dem Off-Boresight Angle (OBA).
English: The elements in linear antenna array are divided into two halves. These two separate antennae arrays are placed symmetrically in the focal plane on each side of the axis of the radar antenna (this often called boresight axis). In transmission (Tx) mode, both antennae arrays will be fed in phase and the radiation pattern is represented by the ice blue area, which is called the Σ or Sum -diagram.
In reception (Rx) mode an additional receiving way is possible. From the received signals of both separate antenna arrays, it is possible to calculate Σ (like the transmitted Sum-diagram) and the difference ΔAz, the so called Delta azimuth- diagram. The antenna pattern is given by the amber area on the same figure. Both signals are then compared as a reply processor function and their difference is used to estimate the azimuth of the target more exactly. |
| Source | self-made figure by Christian Wolff, used else at his home page at the German print-version PDF-File page 13. The whole Radartutorial is publicated under GDFL. This picture was replaced on its origin page by figure 4 since 2007/04/01. |
| Author | Chrisian Wolff |
| Permission (Reusing this file) |
see source page footer: http://www.radartutorial.eu/html/_start.de.html |
Licensing
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
  
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
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| This licensing tag was added to this file as part of the GFDL licensing update. |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:19, 4 August 2006 | | 480 × 180 (3 KB) | Charly Whisky | stilisiertes Antennendiagramm: der Differenzkanal besteht praktisch aus zwei schmalen Keulen, die direkt nebeneinander liegen. Die Antennenrichtung hat hier ein Signalminimum. Genau auf diesem Winkel hat aber die nur eine Keule des Summenkanals ihr Maximu |
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