A null command generator test apparatus capable of operating in either the open or closed loop configuration for testing the Sarcalm system. When operating in an open loop configuration the null command generator test apparatus utilizes the normalized voltage output of the null command generator as the estimator for the beam pointing error. When operating in the closed loop configuration, the test apparatus utilizes either the voltage output of the null command generator or the angle difference between the line of sight to the target and the null direction of the antenna servo simulator to estimate the dynamic pointing errors.
A tracking radar signal generator enables the development of a tracking algorithm of the radar controller even before the tracking is completely developed. In the signal generator, a time data generator receives a master clock signal for synchronizing the tracking radar signal generator, a pulse repetition frequency (PRF) signal for generating a sync signal in a radar signal, a tracking target distance value which corresponds to a distance to a target being tracked, and a general target distance value which corresponds to a distance of a target which is only input without being tracked, calculates a tracking target signal and a general target signal which are time-dimension values of the tracking target distance value and the general target distance value, respectively, and outputs the respective input signals including the tracking target signal and the general target signal. A noise generator generates a noise signal in real time. A sync signal generator generates an analog sync signal by amplifying the signal output from the channel of the PRF signal and generates a sync signal for the time data generator. A video signal generator generates and outputs a video signal by combining the noise signal from the noise generator and the tracking target signal and the general target signal from the time data generator.
