Automatic correction of aiming in firing at moving targets
AssigneeHollandse Signaalapparaten B.V.
InventorHans-Friedrich Baasch
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Abstract
In a method for automatically measuring aiming errors and correcting aiming values in the aiming and firing of ballistic weapons at moving targets the continuously supplied direction values (A', E'+.sigma.) of a target position measurement, corrected for daily influences and for the superelevation, are compared with the aiming values (.alpha.+.epsilon.) of at least one gun (2) in a series of successive time intervals after storage of the gun aiming values (.alpha.+.epsilon.) in a memory (3) for a period corresponding with the instantaneous time of flight of the projectile (.tau.).
Claims9
A method for correcting aiming errors of a ballistic weapon which is aimed at a moving target in response to changing azimuth values .alpha. and elevation values .epsilon. received from a fire control device, said method comprising the steps of:
- (a) continually storing the instantaneous azimuth and elevation values received by the ballistic weapon;
- (b) measuring the present azimuth A and elevation E of the target;
- (c) computing a corrected azimuth A' and elevation E'+.sigma. of a position at which a projectile fired by the ballistic weapon should have been aimed to account for meteorological influences and superelevation;
- (d) computing a projectile's time of flight .tau. to said position from the ballistic weapon;
- (e) comparing the corrected azimuth A' and elevation E'+.sigma. with the respective azimuth value .alpha. and elevation value .epsilon. which was stored for a period corresponding to the time of flight .tau., and determining differences representing aiming errors .DELTA..alpha. and .DELTA..epsilon., respectively;
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- (f) adjusting the aim of the ballistic weapon to correct for the errors .DELTA..alpha. and .DELTA..epsilon..
An apparatus for correcting aiming errors of a ballistic weapon adapted for aiming at a moving target in response to changing azimuth values .alpha. and elevation values .epsilon., said apparatus comprising:
- (a) a fire control device for supplying the values .alpha. and .epsilon. to the ballistic weapon, said device including means for measuring the present azimuth A and elevation E of the target, means for computing a corrected azimuth A' and elevation E'+.sigma. of a position at which a projectile fired by the ballistic should have been aimed to account for meteorological influences and superelevation, and means for computing the time of flight .tau. of said projectile from the ballistic weapon to said position;
- (b) an aiming value memory for storing the instantaneous azimuth and elevation values supplied to the ballistic weapon;
- (c) a timing means for effecting reading out from the memory the azimuth value .alpha. and elevation value .epsilon. which was stored for a period corresponding to the time of flight .tau.;
- (d) an error processing unit for receiving the corrected azimuth A' and elevation E'+.sigma. computed by the fire control device and comparing them with the respective azimuth value .alpha. and elevation value .epsilon. read out from memory, and determining differences corresponding to aiming errors .DELTA..alpha. and .DELTA..epsilon., respectively;
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- (e) means for adjusting the aim of the ballistic weapon in response to .DELTA..alpha. and .DELTA..epsilon. to correct for said aiming errors.
Dependencies are inferred from the claim text.