Bandpass calibration of a wideband spectrometer using coherent pulse injection
© 2017 Springer Science+Business Media DordrechtWe present a relatively simple time domain method for determining the bandpass response of a system by injecting a nanosecond pulse and capturing the system voltage output. A pulse of sub-nanosecond duration contains all frequency components with nearl...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
Springer Netherlands
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/48979 |
| _version_ | 1848758730626170880 |
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| author | Patra, N. Bray, J. Roberts, P. Ekers, Ronald |
| author_facet | Patra, N. Bray, J. Roberts, P. Ekers, Ronald |
| author_sort | Patra, N. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2017 Springer Science+Business Media DordrechtWe present a relatively simple time domain method for determining the bandpass response of a system by injecting a nanosecond pulse and capturing the system voltage output. A pulse of sub-nanosecond duration contains all frequency components with nearly constant amplitude up to 1 GHz. Hence, this method can accurately determine the system bandpass response to a broadband signal. In a novel variation on this impulse response method, a train of pulses is coherently accumulated providing precision calibration with a simple system. The basic concept is demonstrated using a pulse generator-accumulator setup realised in a Bedlam board which is a high speed digital signal processing unit. The same system was used at the Parkes radio telescope between 2–13 October 2013 and we demonstrate its powerful diagnostic capability. We also present some initial test data from this experiment. |
| first_indexed | 2025-11-14T09:48:38Z |
| format | Journal Article |
| id | curtin-20.500.11937-48979 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:48:38Z |
| publishDate | 2017 |
| publisher | Springer Netherlands |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-489792018-03-29T09:08:26Z Bandpass calibration of a wideband spectrometer using coherent pulse injection Patra, N. Bray, J. Roberts, P. Ekers, Ronald © 2017 Springer Science+Business Media DordrechtWe present a relatively simple time domain method for determining the bandpass response of a system by injecting a nanosecond pulse and capturing the system voltage output. A pulse of sub-nanosecond duration contains all frequency components with nearly constant amplitude up to 1 GHz. Hence, this method can accurately determine the system bandpass response to a broadband signal. In a novel variation on this impulse response method, a train of pulses is coherently accumulated providing precision calibration with a simple system. The basic concept is demonstrated using a pulse generator-accumulator setup realised in a Bedlam board which is a high speed digital signal processing unit. The same system was used at the Parkes radio telescope between 2–13 October 2013 and we demonstrate its powerful diagnostic capability. We also present some initial test data from this experiment. 2017 Journal Article http://hdl.handle.net/20.500.11937/48979 10.1007/s10686-017-9523-8 Springer Netherlands restricted |
| spellingShingle | Patra, N. Bray, J. Roberts, P. Ekers, Ronald Bandpass calibration of a wideband spectrometer using coherent pulse injection |
| title | Bandpass calibration of a wideband spectrometer using coherent pulse injection |
| title_full | Bandpass calibration of a wideband spectrometer using coherent pulse injection |
| title_fullStr | Bandpass calibration of a wideband spectrometer using coherent pulse injection |
| title_full_unstemmed | Bandpass calibration of a wideband spectrometer using coherent pulse injection |
| title_short | Bandpass calibration of a wideband spectrometer using coherent pulse injection |
| title_sort | bandpass calibration of a wideband spectrometer using coherent pulse injection |
| url | http://hdl.handle.net/20.500.11937/48979 |