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Device for receiving secondary radio signals with quasi-dynamic or dynamic sectoring of space to be monitored and corresponding method

A secondary radar and dynamic method technology, applied in directions such as using reradiation, direction finders using radio waves, directional multi-channel systems using radio waves, etc., can solve problems such as data packet damage, unfavorable superposition, and signal distortion

Active Publication Date: 2011-10-26
IAD GESELLSCHAFT FUER INFORMATIK AUTOMATISIERUNG & DATENVERARBEITUNG MBH
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AI Technical Summary

Problems solved by technology

The three slots must not be occupied by pulses, because otherwise some decoders interpret the entire reply as interference and discard it
If this results in a superimposition of the transmissions of several transponders at the receiver, this leads to corruption of the individual data packets or, in the most favorable case, only to the detection of the strongest received signal
[0022] Another problem is the occurrence of multipath reception due to reflections of the transponder signal on different objects, which at the receiver can lead to an unfavorable superposition of different paths (direct and / or reflected paths)
As a result, the signal can be strongly distorted until it disappears

Method used

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  • Device for receiving secondary radio signals with quasi-dynamic or dynamic sectoring of space to be monitored and corresponding method
  • Device for receiving secondary radio signals with quasi-dynamic or dynamic sectoring of space to be monitored and corresponding method
  • Device for receiving secondary radio signals with quasi-dynamic or dynamic sectoring of space to be monitored and corresponding method

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Embodiment Construction

[0061] For the identification and transmission of common aeronautical data between flying objects, ground vehicles and air traffic control, a 1090 MHz secondary radar is used. figure 1 The principle of a multi-antenna receiver with three directional lobes is shown. In order to partition the space to be monitored in a quasi-dynamic or dynamic manner, the secondary radar system according to the invention has at least one antenna element consisting of N antenna elements AE1, 2, 3, ..., N for receiving transmitted Antenna system A for the secondary radar signal of , a signal processing unit SV with a coupling matrix K connected to the contacts S of the corresponding antenna elements AE1, 2, 3, ..., N and at least one connected to the coupling matrix K receiver m (m=1, 2, ..., M), the coupling matrix has adjustable coefficients (α 11 、α 12 ,...,α 21 、α 22 ...,See figure 2 ) in order to partition the space to be monitored by superimposing the antenna signals. According to fi...

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Abstract

The invention relates to a device for secondary radar signal reception with quasi-dynamic or dynamic sectoring of a space to be monitored and a method used therein. In conventional radar tracking systems, e.g. of rockets, antenna arrays are used, with only one beam being used for one object. One device for receiving secondary radar signals is configured or such a secondary radar system is designed in such a manner that objects can be better separated, especially when there is a large number of objects in the monitored space, thereby making systems less susceptible to interfering signals and achieving multipath propagation.

Description

technical field [0001] The invention according to claim 1 relates to a device for receiving secondary radar signals with quasi-dynamic or dynamic partitioning of a space to be monitored and according to claim 12 to a method for this. Background technique [0002] Primary radars are referred to as radar devices which only and directly implement the radar principle, ie analyze the direct (passive) echoes of previously radiated high-frequency pulses. This concept is used to define secondary radar as a technique in which echoes actively generated by detected objects are used. A combination of both methods is often used in practice (eg in air traffic control in the presence of ground radar). Not specified for primary radar equipment (Primary Surveillance Radar PSR): The object actively generates a signal so that the object can be detected. This is of interest, for example, in the field of air traffic control, since an aircraft must be detectable even if the in-flight transponde...

Claims

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Application Information

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IPC IPC(8): G01S13/76G01S13/78G01S13/74G01S13/42G01S13/02G01S13/72
CPCG01S3/74G01S13/422G01S13/424G01S13/726G01S13/762G01S13/765G01S13/781G01S2013/0263
Inventor H·汉佩尔U·贝罗尔德G·布米勒
Owner IAD GESELLSCHAFT FUER INFORMATIK AUTOMATISIERUNG & DATENVERARBEITUNG MBH
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