Title :
Pencil and Paper Calculation of Noise Level in Superheterodyne Radar Receivers
Author :
Haney, Donald W.
Author_Institution :
The Martin Co., Baltimore, Md.
Abstract :
One method1 for determination of noise level in radar receivers involves the use of a calibrated signal generator for input voltage and use of a quadratic detector instead of the second detector of the radar receiver. By a related method, which is described in this paper, the rms noise level may be determined from the second detector output as a function of receiver input for any common type of second detector even though its response is not exactly quadratic. This method is justified mathematically, and in a practical application the noise level of a 600-mc receiver is determined as 11.2 microvolts (referred to input).
Keywords :
Detectors; Frequency; Noise level; Noise measurement; Radar detection; Radar measurements; Receivers; Signal generators; Signal to noise ratio; Voltage;
Journal_Title :
Aeronautical and Navigational Electronics, IRE Transactions on
DOI :
10.1109/TANE3.1956.4201481