proportional navigation


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proportional navigation

[prə′pȯr·shən·əl ‚nav·ə′gā·shən]
(navigation)
Homing guidance of a guided missile toward a moving target in which the missile turning rate is proportional to the rate of change of line of sight between missile and target.

proportional navigation

proportional navigationclick for a larger image
The control of the trajectory of a body to home onto a target by changing the course of the body several times based on the rate of change of the sightline to the target. Thus, the angular rate of velocity is proportional to the angular rate of the line of sight to the target. This method normally is used by air-to-air and surface-to-air missiles.
References in periodicals archive ?
theta]]: The Proportional Navigation coefficient in the "OXY" plane [K.
Pierson, "Optimal planar evasive aircraft maneuvers against proportional navigation missiles," Journal of Guidance, Control, and Dynamics, vol.
Ghose, "Pure proportional navigation against time-varying target maneuvers," IEEE Transaction on Control Systems Technology, vol.
Guelman, "The closed-form solution of true proportional navigation," IEEE Transaction on Aerospace and Electronic Systems, vol.
Target maneuvering and missile velocity changes will change the seeker look angle required to fly the proportional navigation path.
For long ranges the M-T and M-D lines of sight are practically coincident and the new navigation law then reduces to the above expression for proportional navigation in the presence of one target.
which generalizes the familiar proportional navigation law in the presence of one target; C is the missile Navigation Constant.
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