An electronic analog ballistics computer wherein various ballistics correction analog signals as well as the log of the range from a range finder, either optical or one employing the laser principle are applied to a summing amplifier whose output is effectively the log of the adjusted range (Rn'). Since the superelevation phi s is a function of range for any specific ammunition and constitutes a family of graphic functions for the various ammunitions, an intermediate selected phi s function is generated such that when the log R' signal is provided as an input the output will be the superelevation therefor. The superelevation phi s is then applied to a multiplier into which is also fed the output of an operational amplifier which receives the lateral correction factors and effectively sums them. Thus, the multiplier output constitutes the total horizontal correction and when applied with the superelevation phi s to a resolver whose other input which may be internal is the cant angle, the resultant output provides the total elevation above the line of sight and the total lateral deflection from the line of sight in the gun axis with only the necessity of a single function generator. These output signals can then be applied to the sighting mechanism to correct the reticle for the total of all ballistic factors.
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