Spaceborne multichannel ADS-B signal processing method

A signal processing and multi-channel technology, applied in digital transmission systems, electrical components, error prevention, etc., can solve problems such as inability to take into account multi-channel applications on board, high adaptability requirements for received signal power, and poor real-time data processing capabilities. Achieve strong real-time data processing capabilities and meet the effect of receiving coverage

Active Publication Date: 2017-12-15
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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Problems solved by technology

[0006] The object of the present invention is to provide a kind of space-borne multi-channel ADS-B signal processing method, to solve existing ADS-B signal processing method can't take into account ground A

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[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all examples. Based on the present invention All other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] In order to facilitate the understanding of the embodiments of the present invention, the following will further explain and illustrate by taking specific embodiments as examples in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.

[0040] Such as figure 1 As shown, a kind of space-borne multi-channel ADS-B signal processing method that the present embodiment provides, comprises the ...

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Abstract

The invention provides a spaceborne multichannel ADS-B signal processing method. The method comprises the following steps: S1: performing message header detection on an AD sampling ADS-B signal according to a preset rate to obtain message header information and reference power; S2: performing bit demodulation and confidence coefficient demarcation of the ADS-B signal by using a baseline diversity technology based on the reference power; and S3: performing forceful CRC error correction on the demodulated bits according to the level of the demarcated confidence coefficient, and finally outputting an ADS-B1090ES message with a target bit number. By adoption of the method, the special demands of the ground ADS-B standard system application and the spaceborne multichannel application can be both considered; the real-time data processing ability is high, and the application demands of wide receiving coverage and numerous aircrafts within the area are satisfied; and the power adaption demand on the received signals is low, the sensitivity and the overlapping signal separation ability are good, and the transmission bit error rate is low.

Description

technical field [0001] The invention relates to the technical field of spacecraft signal software processing, in particular to a method for processing satellite-borne multi-channel ADS-B signals. Background technique [0002] ADS-B (Automatic Dependent Surveillance-Broadcast, Automatic Dependent Surveillance-Broadcast) technology is a very important communication and surveillance technology in the new navigation system. Organically combined with ATC consistency monitoring and cabin comprehensive information display, it enhances and expands very rich functions for the new navigation system, and redefines the three major elements of today's air traffic control: communication, navigation, and surveillance. [0003] Automatic - automatic, "running around the clock", no duty required. Dependent - related, it only needs to rely on accurate global satellite navigation and positioning data. Surveillance - to monitor (obtain) an aircraft's position, altitude, speed, heading, identi...

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Application Information

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IPC IPC(8): H04L1/00H04L29/06
CPCH04L1/0045H04L1/0061H04L69/26
Inventor 胡浩吴小丹双小川张程黄奕
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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