Method and device for processing signals based on broadcast mode automatic dependent surveillance

A broadcast automatic and signal processing technology, applied in the aviation field, can solve the problems of misjudgment of data bits, lost messages, signal interference, etc., to achieve the effect of improving stability, reducing error rate and good accuracy

Active Publication Date: 2010-05-05
四川九洲空管科技有限责任公司
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Problems solved by technology

The ADS-B system based on the 1090ES data link uses an omnidirectional antenna, and as the response signal of all secondary radar A/C modes of air transport, it can be received by the ADS-B equipment; The number of extended intermittent oscillation signals sent by the on-board equipment is much more than the signals detected by the existing SSR system, and the probability of interference between the signals is also much greater; especially near the airport, when the signals are very dense When the traditional secondary radar A/C mode response signal is superimposed on the extended intermittent oscillation signal, the received signal may form a false extended int

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  • Method and device for processing signals based on broadcast mode automatic dependent surveillance
  • Method and device for processing signals based on broadcast mode automatic dependent surveillance
  • Method and device for processing signals based on broadcast mode automatic dependent surveillance

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[0030] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] The technical solutions of the embodiments of the present invention are further described below with reference to the accompanying drawings and specific embodiments.

[0032] figure 1 It is a flowchart of the signal processing method based on broadcast automatic dependent monitoring according to the embodiment of the present...

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Abstract

The invention discloses a method and a device for processing signals based on a broadcast mode automatic dependent surveillance. The method comprises the following steps of obtaining pulse amplitude information, consisting of message amplitude information, by sampling spreading discontinuous oscillation signals; obtaining pulse information and a leading head mark according to the pulse amplitude information; obtaining a reference amplitude value according to the leading head mark, the pulse information and the pulse amplitude information; obtaining a confidence level bit and a data qualification bit of a data bit in the message amplitude information by combining with the leading head mark, the pulse information and the pulse amplitude information according to the reference amplitude value; and correcting message information in the spreading discontinuous oscillation signals according to the obtained confidence level bit and data qualification bit of the data bit in the message amplitude information. The embodiment of the invention can efficiently reduce error data bits in the message information and improve the stability of message signals.

Description

technical field [0001] The invention relates to signal processing technology, in particular to a signal processing method and device based on broadcast automatic correlation monitoring, and belongs to the field of aviation technology. Background technique [0002] With the rapid development of aerospace technology, it is an important part of air traffic control to make the aircraft on the route fly in the airspace safely, effectively and in a planned way. Air traffic control needs to monitor the flight dynamics of the aircraft in the airspace in real time. [0003] The traditional radar monitoring method uses the query and response method to detect the target, but the radar system itself has many limitations, which limit the improvement of monitoring performance. The rotation period limits the improvement of the data update rate, thereby limiting the improvement of the surveillance accuracy; the inability to obtain situational data such as the planned route and speed of the ...

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Application Information

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IPC IPC(8): G01S13/66
Inventor 李海轮刘志刚安强陈思刘志勇谢莉
Owner 四川九洲空管科技有限责任公司
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