Title :
A new digital spectrometer for low frequency solar radio observation based on FPGA
Author :
Dong, Liang ; Wang, Min ; Shi, Shuobiao
Author_Institution :
Yunnan Obs. of Chinese Acad. Sci., Kunming, China
Abstract :
In this paper, we introduce a new digital spectrometer for low frequency solar radio observation based on FPGA. The single ADC´s sampling rate is at 204.8Msps (Million sampling per second), so the input bandwidth of this spectrometer can reach 204.8MHz based on Nyquist sampling theorist. The input dynamic range of this spectrometer can achieve nearly 72dBm because of multi-bit sampling. In the same time, this spectrometer´s spectral resolution can be set 0.2MHz/channel, 0.4MHz/channel and 0.8MHz/channel by program, and time resolution can also be set 2ms, 5ms and 10ms by program.
Keywords :
astronomical instruments; field programmable gate arrays; radioastronomy; ADC sampling rate; FPGA; digital spectrometer; input bandwidth; input dynamic range; low frequency solar radio observation; multibit sampling; spectrometer spectral resolution; spectrometer system; Band pass filters; Bandwidth; Clocks; Dynamic range; Field programmable gate arrays; Filtering algorithms; Filtering theory; FPGA; high spectral and time resolution; low frequency solar radio observation; real-time spectrometer system;
Conference_Titel :
Signal Processing Systems (ICSPS), 2010 2nd International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-6892-8
Electronic_ISBN :
978-1-4244-6893-5
DOI :
10.1109/ICSPS.2010.5555581
