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Proportional navigation (also known as PN or Pro-Nav) is a guidance law (analogous to proportional control) used in some form or another by most homing air target missiles. [1] It is based on the fact that two vehicles are on a collision course when their direct line-of-sight does not change direction as the range closes. PN dictates that the ...
Guidance, navigation and control (abbreviated GNC, GN&C, or G&C) is a branch of engineering dealing with the design of systems to control the movement of vehicles, especially, automobiles, ships, aircraft, and spacecraft. In many cases these functions can be performed by trained humans.
Proportional navigation (also known as "PN" or "Pro-Nav") is a guidance principle (analogous to proportional control) used in some form or another by most homing air target missiles. [5] It is based on the fact that two objects are on a collision course when the direction of their direct line-of-sight does not change.
It can be lost prematurely as a result of pilot commands or system failures. Loss of normal law as a result of a system failure results in alternate law 1 or 2. [8] Unlike conventional controls, in normal law vertical side stick movement corresponds to a load factor proportional to stick deflection independent of aircraft speed. When the stick ...
Since so many types of missile use this guidance system, they are usually subdivided into four groups: A particular type of command guidance and navigation where the missile is always commanded to lie on the line of sight (LOS) between the tracking unit and the aircraft is known as command to line of sight (CLOS) or three-point guidance.
Electronic Route Guidance System (ERGS) was an American government-sponsored in-vehicle navigation and guidance system developed by the United States Federal Highway Association in the 1970s. [1] ERGS was the initial stage of a larger research and development effort called the Intelligent Transportation System (ITS).
The output of the navigation system, the navigation solution, is an input for the guidance system, among others like the environmental conditions (wind, water, temperature, etc.) and the vehicle's characteristics (i.e. mass, control system availability, control systems correlation to vector change, etc.).
The Genesis of inertial navigation systems is explained in the following reference. The LN-1 was a development attitude reference for the XB-70 Valkyrie. [6] The LN-1A was a precision attitude reference for the Grumman E-1A Tracer. [7] [8] The LN-2A (military designation AN/ASN-31 or −36) was a Doppler-inertial system for the A-6A Intruder