FPGA (field programmable gate array) Circuit board and telescope digital operational board

A digital computing and circuit board technology, applied in the field of astronomy, can solve the problems of low transmission bandwidth and difficult real-time transmission, and achieve the effect of high bandwidth

Inactive Publication Date: 2018-06-22
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the external transmission bandwidth of ROACH2 is rel

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  • FPGA (field programmable gate array) Circuit board and telescope digital operational board
  • FPGA (field programmable gate array) Circuit board and telescope digital operational board
  • FPGA (field programmable gate array) Circuit board and telescope digital operational board

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] figure 1 It is a structural schematic diagram of a FPGA circuit board in an embodiment of the present invention, as figure 1 As shown, it includes: the FPGA circuit board includes a polyphase filter module, a Fourier transform module, a power detection module and a buffer module; parallel filtering; the Fourier transform module is used to perform fast Fourier transform on the signal after parallel filtering; the power detection module is used to perform signal power detection on the signal after fast Fourier transform; the cache The module is used to buffer the signal after signal power detection.

[0021] It should be noted that the FPGA circuit board is located...

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Abstract

The invention provides an FPGA (field programmable gate array) circuit board and a telescope digital operational board; the FPGA circuit board includes a multi-phase filter module, a Fourier transformmodule, a power detection module and a cache module; the multi-phase filter module is used for performing multi-channel signal parallel filtering on signals from an analog-digital conversion module;the Fourier transform module is used for performing fast Fourier transform on the signals subjected to parallel filtering; the power detection module is used for performing signal power detection on the signals subjected to fast Fourier transform; the cache module is sued for caching the signals subjected to signal power detection. The FPGA (field programmable gate array) circuit board and the telescope digital operational board have the advantages that by providing the Fourier transform module and the multi-phase filter module and combining multistage DDC (direct digital control), PFB (polyphase filter bank), FFT (fast Fourier transform) and FIR (finite impulse response), a best frequency resolution on FPGAs of the same level is achieved; a great bandwidth is provided.

Description

technical field [0001] The invention relates to the field of astronomy, more specifically, to an FPGA circuit board and a telescope digital operation board. Background technique [0002] Astronomical Telescope is an important tool for observing celestial bodies. It is no exaggeration to say that without the birth and development of telescopes, there would be no modern astronomy. With the improvement and improvement of the performance of telescopes in all aspects, astronomy is also undergoing a huge leap, rapidly advancing human understanding of the universe. [0003] There are generally two lens tubes on the astronomical telescope. The large one is the main mirror, which is used to observe the target; the small one is called the finder mirror, which is used to find the target, also called the sight. The eyepiece is a separate entity that determines the magnification. There will be an F value on the eyepiece, which is the focal length of the eyepiece. Divide the F value of t...

Claims

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Application Information

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IPC IPC(8): G02B23/00
CPCG02B23/00
Inventor 段然张馨心李菂
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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