An evs-based ads-b receiver digital gain compensation system and its compensation method

An ADS-B, digital gain technology, applied in transmission systems, electrical components, transmission noise suppression, etc., can solve the problems that the performance value improvement is not enough to return the cost investment, the receiver power consumption and cost increase, and the occupation of computing resources, etc. Achieve the effect of low power consumption, small amount of calculation, and reduced bit error rate

Active Publication Date: 2022-01-14
HANGZHOU INNOVATION RES INST OF BEIJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] 1) Increase the digital AGC compensation gain at the digital end at the cost of resource consumption; this method will take up a lot of computing resources, and eventually lead to an increase in power consumption and cost of the receiver at the same time
[0005] 2) At the expense of cost, use an expensive high-performance low-noise amplifier in the RF front-end; this method will lead to a substantial increase in cost, and the obtained performance value improvement is not enough to return the cost investment

Method used

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  • An evs-based ads-b receiver digital gain compensation system and its compensation method
  • An evs-based ads-b receiver digital gain compensation system and its compensation method
  • An evs-based ads-b receiver digital gain compensation system and its compensation method

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Embodiment Construction

[0039] The present invention will be further elaborated and described below in combination with specific embodiments. The technical features of the various implementations in the present invention can be combined accordingly on the premise that there is no conflict with each other.

[0040] Such as figure 1 As shown, an EVS-based ADS-B receiver digital gain compensation system consists of an electromagnetic vector sensor module (hereinafter referred to as the EVS module), a radio frequency processing module, an A / D module, a digital processing module, and a arrival wave signal spatial spectrum estimation module And multiple signal classification spectrum peak search module.

[0041] Wherein, the EVS module is connected with the radio frequency processing module; the radio frequency processing module is connected with the input end of the A / D module, and its internal gain is regulated by the digital processing module;

[0042] The A / D module is used as a bridge between the ra...

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Abstract

The invention discloses an EVS-based ADS-B receiver digital gain compensation system and a compensation method thereof, belonging to the field of aeronautical communication signal processing. The EVS module is connected to the RF processing module; the RF processing module is connected to the input of the A / D module, and its internal gain is adjusted by the digital processing module; the A / D module is used as a bridge between the RF processing module and the digital processing module , its output terminal is connected with the digital processing module and the space spectrum estimation module of the arrival wave signal, and its internal gain is regulated by the digital processing module; the signal from the A / D module is received by the space spectrum estimation module of the arrival wave signal, and the estimated The spatial spectrum data is transmitted to the multiple signal classification spectrum peak search module; the incident signal pitch angle information obtained by the multiple signal classification spectrum peak search module is transmitted to the digital processing module for digital gain compensation to achieve the effect of eliminating the ripple amplitude and reduce the receiver bit error rate.

Description

technical field [0001] The invention belongs to the field of aviation communication signal processing, and in particular relates to an EVS-based ADS-B receiver digital gain compensation system and a compensation method thereof. Background technique [0002] ADS-B technology is a technology based on satellite positioning information used to complete ground / air air traffic control surveillance and air-air surveillance in the form of data links between aircraft and ground, and between aircraft and aircraft. Most of the ADS-B receivers are relatively simple, generally with a zero-IF receiver structure, and the signal processing and decoding work is generally completed in the digital processing module. Since the front-end processing capability of the ADS-B receiver is not strong, a large amount of interference and noise will be brought into the digital processing module. Therefore, it is necessary to post-compensate the gain of the front-end low-noise amplifier to reduce the over...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/16H04B1/18H04B1/10H04B1/12H04B15/00
CPCH04B1/16H04B1/18H04B1/10H04B1/12H04B15/005
Inventor 罗喜伶罗亨许乙付
Owner HANGZHOU INNOVATION RES INST OF BEIJING UNIV OF AERONAUTICS & ASTRONAUTICS
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