Spacecraft network audio transmission device
A network audio and transmission device technology, applied in the field of aerospace communication, can solve problems such as general sound quality, achieve the effects of reducing computational complexity, improving versatility, and improving the ability to resist single event effects
Active Publication Date: 2020-05-19
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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[0002] In the early days of traditional Tiandi audio data transmission, due to the limitation of Tiandi bandwidth, audio data services required audio coding with a large compression ratio, and the sound quality was average, which could only meet the basic voice communication requirements of Tiandi
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[0045] 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.
[0046] In this embodiment, a spacecraft network audio transmission device is realized by an independent module, externally connected to the internal communication network of the spacecraft, and having network data processing functions such as network interface, link layer protocol processing and network protocol stack; The signal is compressed and coded, and the network data is processed and the network audio transmission is realized through the network interface circuit.
[0047] ...
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The invention discloses a spacecraft network audio transmission device, and the device is realized by adopting an independent module, is externally connected with a spacecraft internal communication network, and has network data processing functions of a network interface, link layer protocol processing, a network protocol stack and the like. The device compresses and codes a voice signal, and achieves the network audio transmission through network data processing and a network interface circuit. Compared with the prior art, the device has the advantages and beneficial effects that a processing architecture based on an FPGA and a DSP is adopted to independently realize audio encoding and decoding and network data processing functions, so the universality, the expandability and the processing speed are improved; on the basis of realizing high-fidelity audio encoding and decoding, the operation complexity is reduced, and low signal delay and low power consumption are realized; timing read-back is performed on the master control FPGA through the high-reliability anti-fuse FPGA so that the capability of resisting the single event effect of the network audio transmission device in the space environment can be enhanced.
Description
technical field [0001] The invention relates to the field of aerospace communication, in particular to a spacecraft network audio transmission device, which is applied to the network audio communication of manned aircraft. Background technique [0002] In the early days of traditional Tiandi audio data transmission, due to the limitation of Tiandi bandwidth, audio data services required audio coding with a large compression ratio, and the sound quality was average, which could only meet the basic voice communication requirements of Tiandi. [0003] With the increase of aircraft communication bandwidth and the application of space Ethernet communication, the aircraft audio data service needs to be connected to the space station Ethernet communication network platform, and high-fidelity audio communication is required, not only to realize the voice communication function, but also to meet the requirements of on-orbit audio communication. entertainment needs. Therefore, a spac...
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IPC IPC(8): H04L29/06
CPCH04L69/16H04L69/22
Inventor 黄建青陆彬戴志晃汪雪峰刘艳丽罗鹏吴晟蔡非凡
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM