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

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...

AI Technical Summary

Problems solved by technology

[0005] However, the external transmission bandwidth of ROACH2 is relatively low, and real-time transmission is still difficult to achieve

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