Device for receiving secondary radio signals with quasi-dynamic or dynamic sectoring of space to be monitored and corresponding method
A secondary radar, dynamic method, applied in directions such as re-radiation, direction finders using radio waves, directional multi-channel systems using radio waves, etc., can solve problems such as discarding, signal distortion, interference, etc.
Active Publication Date: 2014-12-10
IAD GESELLSCHAFT FUER INFORMATIK AUTOMATISIERUNG & DATENVERARBEITUNG MBH
View PDF9 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
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 multipath reception due to reflections of transponder signals on different objects, which at the receiver lead to unfavorable superposition of different paths (direct and / or reflected paths)
As a result, the signal can be strongly distorted until it disappears
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0064] 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 1The 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 secondary radar system consisting of N antenna elements AE1, 2, 3, . . . Antenna system A for secondary radar signals, a signal processing unit SV with a coupling matrix K connected to the points S of the respective antenna elements AE1, 2, 3, ..., N and at least one receiver m connected to the coupling matrix K (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 antenna signals. According to figure 1 In the example shown with three ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A device and method for secondary radar signal reception with quasi-dynamic or dynamic sectoring of a space to be monitored. The device includes at least one antenna assembly including antenna elements for the reception of transmitted secondary radar signals, a signal processing unit connected via a connection point to the antenna elements for the joint processing of received antenna signals, outputs associated with a couple matrix in the signal processing unit and individual receivers. The couple matrix includes adjustable coefficients for sectoring of the space to be monitored and for performing a superposition of the antenna signals using a multiplicative-additive combination of the received antenna signals. In the case of dynamic sectoring of the space, each receiver receives for each receipt telegram another weighted superposition of the antenna signals with certain couple coefficients, and in the case of quasi-dynamic sectoring the adjustable coefficients are fixed over a longer time period.
Description
technical field [0001] The invention relates to a device for receiving secondary radar signals by partitioning a space to be monitored in a quasi-dynamic or dynamic manner and to a method therefor. 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 transponder is faulty. If the frequency used ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/76G01S13/78G01S13/74G01S13/42G01S13/02G01S13/72
CPCG01S13/422G01S2013/0263G01S13/781G01S13/765G01S13/762G01S13/726G01S13/424G01S3/74
Inventor H·汉佩尔U·贝罗尔德G·布米勒
Owner IAD GESELLSCHAFT FUER INFORMATIK AUTOMATISIERUNG & DATENVERARBEITUNG MBH