Method and device for locating a heat-radiating target and for determining its direction

摘要

In this method, amplified output voltages of the photoelectric cell (1) detecting the incident radiation are supplied to a digital period or frequency analysis, and these digital values and a reference frequency originating from the modulator (2), as reference, are processed with the aid of the microprocessor (5), and the deviation of the target from a reference point or coordinate system defined in the field of view is output as a result. The digital approach results in a reduction in the amount of electronics and in the residual ripple on the error voltages. <IMAGE>