MOVING TARGET ORDNANCE CONTROL

• Main Authors: BOLES, SOL, SMREK, WALTER J
• Format: Patent
• Language: English; French
• Published: 30.09.1986
• Edition: 4
• Subjects: AIMING; ANALOGOUS ARRANGEMENTS USING OTHER WAVES; BLASTING; CONTROLLING; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; HEATING; LIGHTING; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MECHANICAL ENGINEERING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES; TESTING; WEAPON SIGHTS; WEAPONS

MOVING TARGET ORDNANCE CONTROL In an airborne radar system, moving ground targets are identified on a cathode ray tube (CRT) display and their motion tracked to allow precise delivery of air-to-ground weapons. Target location errors, due to the effect of target motion upon the doppler frequency of the received radar signals, are significantly reduced. The target's radial velocity with respect to the electrical boresight of the system antenna is determined and a corresponding frequency adjustment is made to the processed signal in order to accurately locate the target on the display to lie in precise correspondence to its displayed stationary surroundings. The measurement of target radial velocity also provides a precise interferometer antenna referenced azimuth angle estimate to be used for relative angle and azimuth weapon guidance, independent of usually large angle errors arising from clutter effects within the field of view of the antenna, and of other hardware and navigational error sources associated with absolute angle measurement systems.