Incoherent Scatter Measurements of E- and F-Region Density, Temperatures, and Collision Frequency at Millstone Hill
The Millstone Hill incoherent (Thomson) scatter radar system has been operated since 1963 to perform a synoptic study of F2-region electron densities, and electron and ion temperatures. These measurements have been conducted by transmitting single long pulses and performing digital sweep integration...
| Main Authors: | , , , |
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| Format: | Technical Report |
| Language: | en_US |
| Published: |
Haystack Observatory
2015
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| Online Access: | http://hdl.handle.net/1721.1/97675 |
| _version_ | 1811097263812902912 |
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| author | Oliver, W. L. Salah, J. E. Wand, R. H. Evans, J. V. |
| author_facet | Oliver, W. L. Salah, J. E. Wand, R. H. Evans, J. V. |
| author_sort | Oliver, W. L. |
| collection | MIT |
| description | The Millstone Hill incoherent (Thomson) scatter radar system has been operated since 1963 to perform a synoptic study of F2-region electron densities, and electron and ion temperatures. These measurements have been conducted by transmitting single long pulses and performing digital sweep integration and spectrum analysis of the reflected signals. This report describes changes made to the system in 1969 to permit extensions of the measurements to altitudes below 200 km (i.e., the E- and F1-regions). These changes include modifications to the radar timing equipment to permit the transmission of close-spaced pairs of pulses from which the echo autocorrelation function can be determined in the computer by processing appropriately spaced pairs of echo samples. By operating the radar coherently, it has also been possible to subtract the unwanted (stronger) clutter signals from the ionospheric echoes. Samples are presented of the results that can now be obtained from these programs. |
| first_indexed | 2024-09-23T16:57:00Z |
| format | Technical Report |
| id | mit-1721.1/97675 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:57:00Z |
| publishDate | 2015 |
| publisher | Haystack Observatory |
| record_format | dspace |
| spelling | mit-1721.1/976752019-04-12T13:25:10Z Incoherent Scatter Measurements of E- and F-Region Density, Temperatures, and Collision Frequency at Millstone Hill Oliver, W. L. Salah, J. E. Wand, R. H. Evans, J. V. The Millstone Hill incoherent (Thomson) scatter radar system has been operated since 1963 to perform a synoptic study of F2-region electron densities, and electron and ion temperatures. These measurements have been conducted by transmitting single long pulses and performing digital sweep integration and spectrum analysis of the reflected signals. This report describes changes made to the system in 1969 to permit extensions of the measurements to altitudes below 200 km (i.e., the E- and F1-regions). These changes include modifications to the radar timing equipment to permit the transmission of close-spaced pairs of pulses from which the echo autocorrelation function can be determined in the computer by processing appropriately spaced pairs of echo samples. By operating the radar coherently, it has also been possible to subtract the unwanted (stronger) clutter signals from the ionospheric echoes. Samples are presented of the results that can now be obtained from these programs. 2015-07-06T14:02:11Z 2015-07-06T14:02:11Z 1979-02-23 Technical Report http://hdl.handle.net/1721.1/97675 en_US Millstone Technical Reports;531 application/pdf Haystack Observatory |
| spellingShingle | Oliver, W. L. Salah, J. E. Wand, R. H. Evans, J. V. Incoherent Scatter Measurements of E- and F-Region Density, Temperatures, and Collision Frequency at Millstone Hill |
| title | Incoherent Scatter Measurements of E- and F-Region Density, Temperatures, and Collision Frequency at Millstone Hill |
| title_full | Incoherent Scatter Measurements of E- and F-Region Density, Temperatures, and Collision Frequency at Millstone Hill |
| title_fullStr | Incoherent Scatter Measurements of E- and F-Region Density, Temperatures, and Collision Frequency at Millstone Hill |
| title_full_unstemmed | Incoherent Scatter Measurements of E- and F-Region Density, Temperatures, and Collision Frequency at Millstone Hill |
| title_short | Incoherent Scatter Measurements of E- and F-Region Density, Temperatures, and Collision Frequency at Millstone Hill |
| title_sort | incoherent scatter measurements of e and f region density temperatures and collision frequency at millstone hill |
| url | http://hdl.handle.net/1721.1/97675 |
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