Investigation on THz Interferometer System Based onHigh Speed Digital Correlator

doi:10.11999/JEIT150841

Volume 38 Issue 4

Apr. 2016

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Investigation on THz Interferometer System Based onHigh Speed Digital Correlator[J]. Journal of Electronics & Information Technology, 2016, 38(4): 964-969. doi: 10.11999/JEIT150841

Citation:

Investigation on THz Interferometer System Based onHigh Speed Digital Correlator[J]. Journal of Electronics & Information Technology, 2016, 38(4): 964-969. doi: 10.11999/JEIT150841

Investigation on THz Interferometer System Based onHigh Speed Digital Correlator[J]. Journal of Electronics & Information Technology, 2016, 38(4): 964-969. doi: 10.11999/JEIT150841

Citation:

Investigation on THz Interferometer System Based onHigh Speed Digital Correlator[J]. Journal of Electronics & Information Technology, 2016, 38(4): 964-969. doi: 10.11999/JEIT150841

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Investigation on THz Interferometer System Based onHigh Speed Digital Correlator

doi: 10.11999/JEIT150841

Received Date: 2015-07-13
Rev Recd Date: 2015-11-13
Publish Date: 2016-04-19

Abstract

Abstract

As a conventional unit in interferometric imager, correlator has a wide range of applications to get visibility functions. THz imager has more and more applied to security check and military scouting area. To solve the phase synchronization problem in high speed digital correlator, which is designed for THz interferometer, this paper presents a cross synchronization scheme based on low hardware cost FPGA controller. A high speed multichannel digital correlator is presented under this scheme. In this correlator, sampling rate can reach as high as 5 GHz, effective number of ADC is greater than or equal to 6 bit, integration time is adjustable. Interference fringes are presented by constructing a 0.44 THz interferometer out of this correlator and related THz microwave devices. The fringes linear phase error is better than2. The research could provide important reference value about the design of THz interferometric imager in future.
- Terahertz,
- Interferometric imager,
- High speed digital correlator,
- Phase synchronization

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References(22)

References

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