Accession Number:

ADA200697

Title:

Field Test of a Crosswind Scintillometer

Descriptive Note:

Test rept. Nov 1987-Jul 1988

Corporate Author:

ARMY DUGWAY PROVING GROUND UT

Personal Author(s):

Report Date:

1988-07-21

Pagination or Media Count:

61.0

Abstract:

Field tests of a prototype scintillometer that uses a spatially- averaged filter design for crosswind measurement were conducted at the Aberdeen Proving Ground Main Front Gun Range. The scintillometer measures wind components transverse to an optical path established between a transmitter and a receiver. The spatially-averaged filter design peaks wind measurement weighting functions at five segments along the optical path, producing simultaneous crosswind readings from these path segments. Scintillometer performance, evaluated using sonic anemo-meters, GMQ-11 aerovanes, and parallel scintillometer paths, is generally comparable to that of a high quality wind instrument. A performance problem was identified during cross-path wind reversals in light and variable winds, where ambiguities in the sign of the crossing wind component occasionally caused spurious wind readings. The scintillometer design is sufficiently robust for field use, and the transmitters and receivers are easy to set up, align, and operate. The crosswind scintillometer performed well in the field environment during exposure to adverse weather conditions, and appears to have significant test applications.

Subject Categories:

  • Meteorology
  • Guns

Distribution Statement:

APPROVED FOR PUBLIC RELEASE