Accession Number:

AD0165028

Title:

Distance Measuring Device and Method.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s):

Report Date:

1973-07-10

Pagination or Media Count:

6.0

Abstract:

The patent describes a distance measuring device using a source of acoustic signals of at least a predetermined wavelength which is transmitted to a reference surface and the reflected acoustic signal is received in a detector. The transmitted and received signals are phase-mixed in a mixer to provide a signal responsive to the distance between the distance measuring device and the reflecting surface irrespective of the presence of a non-rigid intervening media, such as foliage, which obstructs the desired reflecting surface. An envelope detector and a threshold device provide a utilization signal when the distance between the distance measuring device and the reflecting surface reaches a predetermined value.

Subject Categories:

  • Acoustic Detection and Detectors
  • Aerial Bombs
  • Fire Control and Bombing Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE