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Digital back-end equipment of phased array feed source receiver and phased array feed source receiver

A technology for back-end equipment and receivers, applied in the field of radio telescopes, can solve the problems of wasting computing resources and high hardware costs, and achieve the effect of efficient use of storage resources and cost reduction

Pending Publication Date: 2020-11-03
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The present invention solves the problems of wasting computing resources and high hardware cost in existing radio telescope receiver digital back-end schemes

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  • Digital back-end equipment of phased array feed source receiver and phased array feed source receiver
  • Digital back-end equipment of phased array feed source receiver and phased array feed source receiver
  • Digital back-end equipment of phased array feed source receiver and phased array feed source receiver

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Embodiment Construction

[0022] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] Compared with the traditional radio astronomy receiver technology, the PAF receiver system has the advantages of high gain, large field of view and controllable far-field pattern. By densely arranging feed arrays on the focal plane to sample the focal plane field, digital beamforming is subsequently realized through the beamforming network to complete the observation of cosmic celestial bodies. The beamforming network of PAF requires a large amount of calculation, which is the bottleneck restricting the application of PAF in radio astronomy.

[0024] The PAF digital back-end beamfo...

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Abstract

The invention provides a digital back-end device of a phased array feed source receiver and the phased array feed source receiver, and the digital back-end device of the phased array feed source receiver comprises a data transmission module, a digital signal preprocessing module, a data storage module and a beam forming network module, wherein the digital signal preprocessing module comprises a programmable logic gate array integrated with a plurality of multi-channel analog-digital converters, each multi-channel analog-digital converter is used for converting multi-channel analog data in parallel to obtain multi-channel digital data, and the programmable logic gate array is used for performing channelization processing on the multi-channel digital data, and sending data after channelization processing to the data transmission module; and the beam forming network module is used for performing calibration or beam forming according to the channelized data. According to the equipment, thehardware cost can be reduced, two working modes of offline beam forming and real-time beam forming can be realized, and system storage resources can be efficiently utilized.

Description

technical field [0001] The invention relates to the technical field of radio telescopes, in particular to a phase array feed receiver digital back-end device and a phase array feed receiver. Background technique [0002] Radio telescopes are generally composed of antenna and receiving system. The receiving system includes feed and receiver components. The existing phased array feed (Phased Array Feed, PAF) receiver system has high gain, large field of view and controllable Advantages such as far-field pattern. The PAF digital back-end beamforming network can be realized by expanding the traditional receiver technology in parallel. This solution uses multiple sampling cards to realize multi-channel RF signal sampling, and then independently completes multi-channel data processing, and stores them synchronously to the data server, and then offline. The calculation of the beamforming network is completed as follows. [0003] The above-mentioned digital back-end solution sampl...

Claims

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Application Information

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IPC IPC(8): H04B7/08
CPCH04B7/0837
Inventor 刘彬朱岩柴晓明于京龙金乘进彭勃
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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