Rick Chapman

Disdrometer Reports

• Chapman, R. D. and M. J. Jose, "The JHU/APL Disdrometer (version 1.5)", JHU/APL Technical Report SRO-97-03, 18 June 1997.
  Initial design report for firmware revision 1.5. Includes system description, operations manual, design description, schematics, board layouts, and firmware source code. (PDF 384kB)

• Chapman, R. D. and M. J. Jose, "The JHU/APL Disdrometer (version 3.1)", JHU/APL Technical Report SRO-97-03b, 27 October 1997.
  Design report for firmware revision 3.1. Includes system description, operations manual, design description, schematics, board layouts, and firmware source code. (PDF 392kB)

• Chapman, R. D., G. Furness, and R. Chamberlain, "Calibration of the JHU/APL Disdrometer", JHU/APL Technical Report SRO-97-11, 7 October 1997.
  Report on calibrating seven instruments, including a detailed description of the procedures and analysis of the resulting data. (PDF 152kB)

• Chapman, R. D., M. J. Jose, and J. R. Rowland, "A Novel Low-Power Disdrometer", 5 January 1998.
  An unfinished manuscript describing the instrument design and operation. Includes sample data and more details on the analysis and accuracy of drop tower calibrations. (PDF 140kB)

• Chapman, R. D. and M. J. Jose, "An External Preamplifier for the JHU/APL Disdrometer", JHU/APL Technical Report SRO-98-11, 24 September 1998.
  A report describing an external preamplifier designed to extend the low-end sensitivity of the JHU/APL disdrometer. (PDF 108kB)