This page documents Virginia Tech's current tasks and past contributions to the Long Wavelength Array (LWA) project. Only tasks/contributions which are explictly funded by LWA/ONR funds or (in earlier years) by LWDA/NRL funds are included, and only the tangible, documented outcomes are listed. However, LWA has also benefited from cross-over contributions from our NSF-funded low-frequency radio astronomy project ETA (web site).
Maintainer: S.W. Ellingson
URL: http://www.ece.vt.edu/swe/lwavt/
Last Update: Apr 12, 2012.
Table of Contents:
| MCS0046 | C.N. Wolfe, "MCS Data Recorder Operating System Version 1.4.0, Apr 11, 2011. |
| MCS0045 | C. Wolfe, S. Ellingson & C. Patterson, "Interface Control Document for Monitor and Control System Data Recorder, v.1.4", March 2, 2012. |
| MCS0044 | C.N. Wolfe, "MCS Data Recorder Operating System Version 1.3.1, Mar 2, 2011. |
| SLC0020 | S. Ellingson, "Results from LWA1 Commissioning: Sensitivity, Beam Characteristics, & Calibration", URSI National Radio Science Meeting, Boulder, CO, Jan 4, 2012. |
| M.184, SLC0019 |
S. Ellingson, "Fun With TBN", September 13, 2011. |
| MCS0043 | S. Ellingson, "Real-Time Data Analysis using LWA-1 Data Recorders", LWA Users Meeting, Albuquerque, NM, May 12, 2011. |
| SLC0018 | S. Ellingson, "Crab Giant Pulses & Other Dispersed Transients", LWA Users Meeting, Albuquerque, NM, May 12, 2011. |
| MCS0042 | S. Ellingson, "How to Observe with LWA1", LWA Users Meeting, Albuquerque, NM, May 12, 2011. |
| M.180, MCS0041 |
C. Wolfe, S. Ellingson & C. Patterson, "MCS-Data Recorder PC Assembly and Operating System Installation", June 6, 2010. |
| MCS0040 | S. Ellingson, "MCS Software Joint Release 5", March 8, 2011. Includes MCS/Scheduler v.0.9.1, MCS/Executive v.0.4, & MCS/TaskProcessor v.0.2 Earlier versions: See MCS0039. |
| MCS0039 | S. Ellingson, "MCS Software Joint Release 4", Feb 27, 2011. Includes MCS/Scheduler v.0.9, MCS/Executive v.0.3, & MCS/TaskProcessor v.0.1 Earlier versions: See MCS0038. |
| MCS0038 | S. Ellingson, "MCS Software Joint Release 3", Feb 15, 2011. Includes MCS/Scheduler v.0.9 and MCS/Executive version 0.3 Earlier versions: See MCS0036 (2010). |
| SLC0017 | S. Ellingson on behalf of the LWA Collaboration, "Long Wavelength Array Update", URSI National Radio Science Meeting, January 5, 2011. |
| M.176, SLC0016 |
S. Ellingson, Q. Liu, and J. Craig, "The LWA-1 S60 System", December 21, 2010 (v.2). Earlier versions: v.1 (Dec 12, 2010). |
| M.175, SLC0015 |
S. Ellingson, "A Parametric Model for the Normalized Power Pattern of a Dipole Antenna over Ground", December 8, 2010. |
| MCS0037 | S. Ellingson, "LWA MCS Sky Model (LMSM) v.0.1", Nov 08, 2010. |
| MCS0036 | S. Ellingson, "MCS Software Joint Release 2", Nov 17, 2010. Includes MCS/Scheduler v.0.8 and MCS/Executive version 0.2 Earlier versions: JR1, Nov 2, 2010. NOTE: Superceded by MCS0038; see 2011. |
| MCS0035 | S. Ellingson, "IDA (Immediate Data Analysis) v.0.1", Oct 8, 2010. |
| MCS0034 | S. Ellingson, "MTBW v.0.3 (TBW data analysis software)", Oct 5, 2010. Earlier versions: Ver. 0.2; Sep 30, 2010. Ver. 0.1; Sep 28, 2010. NOTE: This software superceded by IDA; see MCS0035. |
| MCS0033 | S. Ellingson, J. Craig, M. Soriano, C. Wolfe, "LWA-1 Local Area Network Configuration", Ver. 3, August 28, 2010. This document available only through the (private) LWA Engineering Memo Series. Earlier versions: Ver. 2; Aug 20, 2010. |
| M.170, SLC0014 |
S. Ellingson, J. Craig, and J. Hartman, "LWA-1 Antenna Position and Cable Data", Ver. 3, December 9, 2010. Earlier Versions: Ver. 2, September 6, 2010; Ver. 1, August 20, 2010. |
| MCS0032 | S. Ellingson, "MCS/Scheduler Software Version 0.6.1", July 1, 2010.
(Start with readme.txt in archive.) Bugfix to previous version
(0.6). NOTE: This software superceded by Joint Release 1; see MCS0036. |
| MCS0031 | S. Ellingson, "LWA Station-Level Metadata", Ver. 5, Apr 13, 2011. Earlier versions: Ver. 4, Mar 29, 2011; Ver. 3, Feb 27, 2011; Ver. 2, Nov 02, 2010; Ver. 1, June 16, 2010. |
| MCS0030 | S. Ellingson, "LWA Station-Level Observing Procedure and Associated Metadata", Ver. 5, Apr 13, 2011. Earlier versions: Ver. 4, Mar 29, 2011; Ver. 3, Mar 01, 2011; Ver. 2, Feb 27, 2011; Ver. 1, June 16, 2010. |
| MCS0029 | S. Ellingson, "Monitoring of LWA Subsystems using ms_mb", June 1, 2010. |
| MCS0028 | S. Ellingson, "MCS/Scheduler Software Version 0.5", June 1, 2010. (Start with readme.txt in archive.) |
| MCS0027 | C.N. Wolfe, "MCS Data Recorder Operating System Version 1.2.4, Dec 10, 2010. Superceded by Ver. 1.3.1 (see 2012). Earlier versions: "1.2.3" Dec 7, 2010; "1.2.1" Sep 24, 2010; "1.2", Aug 25, 2010; "1.1", Jul 2, 2010; "1.0", May 23, 2010. |
| MCS0026 | C.N. Wolfe, "MCS Data Recorder Operating System Version 0.9 (beta)", March 22, 2010. (Start with quickstart.txt in archive.) |
| MCS0025 | C. Wolfe, S. Ellingson & C. Patterson, "Interface Control Document for Monitor and Control System Data Recorder, v.1.2", Aug 25, 2010. Superceded by v.1.4 (2012). Earlier versions: Version 1.1, July 2, 2010; Version 1.0, March 22, 2010. |
| SLC0013 | S.W. Ellingson, "Report on VT LWA-1 Site Activity, Jan 7-12, 2010", Jan 16, 2010. (Includes documentation of S60 backend and data collected during indicated dates.) |
| M.166, SLC0012 |
S.W. Ellingson, "Sensitivity of Antenna Antenna Arrays for Long-Wavelength Radio Astronomy", Dec 30, 2009. (Submission to IEEE Trans. Ant. & Prop.) |
| MCS0024 | S.W. Ellingson, et al., "Monitoring & Control System (MCS) Critical Design Review", Nov 20, 2009. (Presentation at LWA1 CDR.) |
| MCS0023 | S.W. Ellingson, et al., "MCS Documentation for LWA-1 CDR", Nov 10, 2009. |
| MCS0022 | C.N. Wolfe, "MCS Data Recorder Operating System Version 0.8 (pre-alpha)", Nov 10, 2009. Superceded by MCS0026. |
| MCS0021 | S. Ellingson, "MCS/Scheduler Software Version 0.4 (pre-alpha)", Nov 7, 2009. (Start with readme.txt in archive.) |
| MCS0020 | C. Wolfe, S. Ellingson & C. Patterson, "Interface Control Document for Monitor and Control System Data Recorder", Oct 10, 2009. (Not labeled, but this is Version 0.4.) Superceded by MCS0025. |
| MCS0019 | C. Wolfe, S. Ellingson & C. Patterson, "MCS-DR Storage Unit", Sep 23, 2009. |
| M.165, MCS0018 |
C. Wolfe, S. Ellingson & C. Patterson, "MCS Data Recorder Preliminary Design & Verification", Aug 26, 2009. |
| MCS0017 | S. Ellingson, "MCS/Scheduler Software Version 0.3 (pre-alpha)", Aug 25, 2009. (Start with readme.txt in zip file.) |
| MCS0016 | S. Ellingson, "MCS/Scheduler Software Version 0.2 (pre-alpha)", Aug 14, 2009. (Start with readme.txt in zip file.) |
| MCS0015 | A. Srinivasan and S. Ellingson, Python code for direct communication with subsystems, Aug 7, 2009. |
| MCS0014 | S. Ellingson, "MCS/Scheduler Software Version 0.1 (pre-alpha)", Aug 4, 2009. (Start with readme.txt in zip file.) |
| MCS0013 | A. Srinivasan and S. Ellingson, "MCS ICD Compliance Check Software", Jul 31, 2009. For checking compliance of subsystems with MCS Common ICD. |
| MCS0012 | A. Srinivasan and S. Ellingson, "MCS Common ICD Emulation Software for SHL", Jul 19, 2009; bug fix Aug 7, 2009. |
| SLC0011 | S. Ellingson, "Station Level Calibration for LWA-1" (Presentation at LLR), June 1, 2009. |
| MCS0011 | S. Ellingson, "MCS Phase 1 Procurement Request", April 19, 2009. |
| MCS0010 | S. Ellingson, "MCS Common ICD Demonstration Software", Ver. 2, Apr 4, 2009. (Ver. 1, Mar 30, 2009) |
| MCS0009 | S. Ellingson, "MCS Common ICD Network Check Software", Ver. 2, Apr 4, 2009 (Ver. 1, Mar 29, 2009) |
| MCS0008 | S. Ellingson, "MCS Documentation for LWA-1 PDR", Ver. 4, Feb 25, 2009. (Ver. 3, Feb 23, 2009; Ver. 2, Feb 6, 2009; Ver. 1, Feb 5, 2009) |
| MCS0007 | S. Ellingson, "MCS Architecture", Ver. 4, Nov 7, 2009. (Ver. 3, Feb 25, 2009; Ver. 2, Feb 23, 2009; Ver. 1: Feb 4, 2009) |
| MCS0006 | S. Ellingson, "Virginia Tech Input (Responses to Questions Assigned in "January LWA Workshop Agenda Ver. 4", Dec 22, 2008)", Jan 13, 2009. |
| M.149, SLC0010 |
S. Ellingson, "Performance of Simple Delay-and-Sum Beamforming Without Per-Stand Polarization Corrections for LWA Stations", Jan 5, 2009. |
| MCS0005 | S. Ellingson, "MCS Common ICD", Ver. 1.0, Apr 04, 2009. (Ver. 0.4, Mar 29, 2009; Ver. 0.3, Mar 20, 2009; Ver. 0.2, Feb 23, 2009; Ver. 0.1: Dec 31, 2008) |
| MCS0004 | S. Ellingson, "MCS Subsystem Description", Ver. 2, Feb 23, 2009 (Ver. 1: Dec 18, 2008) |
| M.147, SLC0009 |
S. Ellingson, "Some Initial Results from an Electromagnetic Model of the LWA Station Array", Dec 15, 2008. |
| M.146, MCS0003 |
S. Ellingson and A. Cohen, "Beam Dwell and Repointing Time Requirements Derived from Memo 128 Considerations", Dec 7, 2008. |
| M.144, MCS0002 |
S. Ellingson, "Beam Dwell and Repointing", Nov 25, 2008. |
| MCS0001 | MCS Communications Interface, Preliminary/Working Draft, Nov 24, 2008. (spreadsheet) |
| M.157 | S.W. Ellingson, T.E. Clarke, A. Cohem, N.E. Kassim, Y. Pihlstrom, L. J Rickard, and G.B. Taylor, "The Long Wavelength Array", Proc. IEEE, Vol. 97, No. 8, pp. 1421-1430, Aug 2009. |
| M.142 | S. Ellingson, "Sky Noise-Induced Spatial Correlation", Oct 14, 2008. |
| M.141, SLC0007 |
S. Ellingson, "Interaction Between an Antenna and a Shelter", Sep 25, 2008. |
| Dissertation | K. Lee, "Coherent Mitigation of Radio Frequency Interference in 10-100 MHz", Ph.D. Dissertation, Aug 28, 2008. |
| briefing, SLC0006 |
S.W. Ellingson and N.E. Kassim, "LWA Station Design", 2008 URSI Gen. Assy., Aug 11, 2008. |
| M.140, SLC0005 |
S. Ellingson, "Polarimetric Response and Calibration of a Single Stand Embedded in an Array with Irregular Wavelength-Scale Spacings", Aug 14, 2008. |
| SLC0004 | S. Ellingson, "References Applicable to Station-Level Calibration", July 17, 2008. |
| SLC0003 | S. Ellingson, "Suggestions for Experimental Verification of Instrumental Responses", July 2, 2008; Rev. Oct 1, 2008. |
| M.138, SLC0002 |
S. Ellingson, "Single-Stand Polarimetric Response and Calibration", June 15, 2008. |
| M.136, SLC0001 |
S. Ellingson, "Dispersion in Coaxial Cables", Jun 01, 2008. |
| M.134 | K. Lee and S. Ellingson, "Terrestrial Propagation at LWA Frequencies", May 2, 2008. |
| M.130 | J. Craig, M. Harun, and S. Ellingson, "On-the-Air Demonstration of a Prototype LWA Analog Signal Path", Apr 12, 2008. |
| M.129 | S. Ellingson, "Interaction Between an Antenna and a Fence", Mar 24, 2008. |
| Briefing | S.W. Ellingson, "Station Architecture and Related Issues", LWA Pre-PDR Meeting, Mar 18, 2008. |
| Briefing | S.W. Ellingson, "Station Digital Processing", LWA Pre-PDR Meeting, Mar 18, 2008. |
| Briefing | S.W. Ellingson, "DAC, MCS, Calibration, RFI, and Communications", LWA Pre-PDR Meeting, Mar 18, 2008. |
| M.127 | M. Harun and S. Ellingson, "Design and Development of a Prototype ADC for LWA", Mar 4, 2008. |
| M.121 | S. Ellingson, "LWA Analog Signal Path Planning", Jan 23, 2008; Rev. Feb 3, 2008. |
| M.119 | S. Ellingson, "Long Wavelength Array Station Architecture Ver. 1.0", Nov 19, 2007. Note: This is the version approved at SRR. |
| M.116 | M. Harun and S. Ellingson, "Additional Design Information on the AD9230-250 and AD9211-200 ADC Evaluation Boards", December 28, 2007. |
| M.115 | S. Ellingson, "Dispersion by Antennas", December 11, 2007. |
| M.112 | S. Ellingson, M. Harun, and K. Lee, "Evaluation of the AD9230 and AD9211 Analog-to-Digital Converters", December 3, 2007. |
| M.109 | S.W. Ellingson, "Transient Buffer - Wideband (TBW) Preliminary Design", November 11, 2007. |
| M.108 | S.W. Ellingson, "BFU & DP1 Preliminary Design", November 4, 2007. |
| M.107 | S.W. Ellingson, "LWA Beamforming Design Concept", October 30, 2007. |
| M.106 | S.W. Ellingson, "Polarization Processing for LWA Stations", October 29, 2007. |
| Briefing | S.W. Ellingson, "Status of VT Technical Work", LWA Kickoff and Pre-SRR Meeting, Sep 20, 2007. |
| Briefing | S.W. Ellingson, "Path to SRR/PDR", LWA Kickoff and Pre-SRR Meeting, Sep 20, 2007. |
| Briefing | S.W. Ellingson, "System Architecture Review", LWA Kickoff and Pre-SRR Meeting, Sep 20, 2007. |
| Briefing | S.W. Ellingson, "LWA Technical Concept", LWA Kickoff and Pre-SRR Meeting, Sep 20, 2007. |
| M.101 | S. Ellingson, "ADC Sample Rate and Preliminary Design for a Full-RF ADC Post-Processor", September 11, 2007. |
| M.98 | S. Ellingson, "ADC Selection", August 31, 2007. |
| M.94 | S. Ellingson, "System Parameters Affecting LWA Calibration (Memo 52 Redux)", Jul 20, 2007; Rev. Sep 20, 2007; Rev. Oct 11, 2008. |
| Briefing | S. Ellingson, N.E. Kassim, G. Taylor, L. J Rickard, "The Long Wavelength Array", 2007 URSI North American Radio Science Meeting, Jul 2007. |
| M.89 | M. Harun and S. Ellingson, "Revision of the Bandpass Filter for the LWA Analog Receiver", May 30, 2007. |
| M.82 | M. Harun and S. Ellingson, "A Prototype Analog Receiver for LWA", March 28, 2007. |
| M.75 | S. Ellingson, "A Design Study Comparing LWA Station Arrays Consisting of Thin Inverted-V Dipoles", January 28, 2007. |
| M.73 | S. Ellingson, "Effective Aperture of a Large Pseudorandom Low-Frequency Dipole Array", Jan 13, 2007. (presented at 2007 IEEE Int'l Ant. & Prop. Symp.) |
| M.72 | Lee J Rickard, G. Taylor, S. Ellingson, and N. Kassim, "The Long Wavelength Array (LWA) Program Charter", Dec 27, 2006; Rev. Jan 8, 2008. |
| M.67 | S. Ellingson, "Collecting Area of Planar Arrays of Thin Straight Dipoles", December 31, 2006. |
| M.65 | S. Ellingson, "Use of NEC-2 to Calculate Collecting Area", Dec 25, 2006; Rev. Dec 27, 2006. |
| M.63 | M. Harun and S.W. Ellingson, "Practical Considerations in the Design of a Bandpass Filter for the LWA Analog Receiver", November 14, 2006. |
| M.61 | C.R. Anderson and S.W. Ellingson, "The Analog Devices AD6636 Digital Downconverter as a Candidate LWA Receiver Component", Nov 9, 2006. |
| M.45 | S. Ellingson, "A ``Pile of Parts'' Cost Model for LWA Stations", Aug 11, 2006. |
| M.35 | P.S. Ray, S. Ellingson, R. Fisher, N.E. Kassim, L. J Rickard, T. Clarke, "A Strawman Design for the Long Wavelength Array Stations", Apr 11, 2006. |
| M.34 | P.S. Ray, S. Ellingson, R. Fisher, N.E. Kassim, L.J. Rickard, T. Clarke, "LWA Strawman Design", Apr 11, 2006. |
| M.33 | S.W. Ellingson, "Preliminary Analysis of the Effects of Front End Non-Linearity on LWA/LWDA Spectroscopy", May 16, 2005. |
| M.32 | S.W. Ellingson and A. Kerkhoff, "Comparison of Two Candidate Elements for a 30-90 MHz Radio Telescope Array", Jan 2005. (Presented at 2005 IEEE Int'l Ant. and Prop. Symp., Jul 2005) |
| M.31 | S.W. Ellingson and T.C. Kramer, "Sensitivity and Bandwidth of Low-Gain Active Antennas Below 100 MHz, Jan 2005 (Presented at 2005 IEEE Int'l Ant. and Prop. Symp., Jul 2005) |
| M.30 | S.W. Ellingson, "Analysis of a Low-Gain Antenna & Front End for Low Frequency Radio Astronomy", Nov 9, 2004. |
| M.29 | S.W. Ellingson, "Cable Cost for LWA Stations", September 19, 2004. |
| M.28 | S.W. Ellingson, "Designing a Sky-Noise-Limited Receiver for the LWA", (Presented at Science with Wavelengths on Human Scales: A Celebration of the 74th Birthday of Bill Erickson and Low Frequency Radio Science, Santa Fe, NM) Sep 2004. |
| M.27 | S.W. Ellingson, "Receivers for Low-Frequency Radio Astronomy," in From Clark Lake to the Long Wavelength Array: Bill Erickson's Radio Science (N.E. Kassim, et al. eds.), ASP Conference Series, Vol. 345, p. 321, 2005. |
| M.22 | S.W. Ellingson, "Antennas for the Next Generation of Low Frequency Radio Telescopes", IEEE Trans. Ant. and Prop., Vol. 53, No. 8, August 2005, pp. 2480-9. |
| M.18 | A. Kerkhoff and S.W. Ellingson, "A Wideband Planar Dipole Antenna for Use in the Long Wavelength Demonstrator Array (LWDA)," 2005 IEEE Int'l Ant. and Prop. Symp., Washington, DC, July 2005, (1B: 553-6). |