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An inertial navigation system (INS; also inertial guidance system, inertial instrument) is a navigation device that uses motion sensors (accelerometers), rotation sensors and a computer to continuously calculate by dead reckoning the position, the orientation, and the velocity (direction and speed of movement) of a moving object without the ...
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; The LN-2B was the system for the E-2A Hawkeye, and the LN-2C was the system for the P ...
GPS/INS is commonly used on aircraft for navigation purposes. Using GPS/INS allows for smoother position and velocity estimates that can be provided at a sampling rate faster than the GPS receiver. This also allows for accurate estimation of the aircraft attitude (roll, pitch, and yaw) [ citation needed ] angles.
A Selective Availability Anti-spoofing Module (SAASM) is used by military Global Positioning System receivers to allow decryption of precision GPS observations, while the accuracy of civilian GPS receivers may be reduced by the United States military through Selective Availability (SA) and anti-spoofing (AS). [1]
AN/AAD - Airborne Infrared Reconnaissance and Surveillance; Designation Purpose/Description Location/Used By Manufacturer AN/AAD-4: Forward Looking Infrared detection set: AC-119G Shadow
A choke ring antenna is a directional antenna designed for reception of GNSS signals from satellites. It consists of a number of concentric conductive cylinders around a central antenna. The first choke ring antennas were invented at JPL; [ 2 ] since 1989 they have been improved and extended by many companies.