(DoD, NATO) The phenomenon evidenced by the change in the observed frequency of a sound or radio wave caused by a time rate of change in the effective length of the path of travel between the source and the point of observation.
Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.
| APA | Military Dictionary (DoD). (2011). doppler effect. Retrieved September 22, 2026, from http://smartdefine.org/doppler_effect/definitions/1961448 |
| Chicago | Military Dictionary (DoD). 2011. "doppler effect" http://smartdefine.org/doppler_effect/definitions/1961448 (accessed September 22, 2026). |
| Harvard | Military Dictionary (DoD) 2011, doppler effect, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/doppler_effect/definitions/1961448>. |
| MLA | Military Dictionary (DoD). "doppler effect" 4 April 2011. Web. 22 September 2026. <http://smartdefine.org/doppler_effect/definitions/1961448> |