Experimental evaluation of a linear polar-display signal analyzer

The report presents the results of an experimental evaluation of a linear, polar-display signal analyzer. Signals generated in the laboratory are used to determine the ability of the device to indicate the type of carrier modulation and the carrier parameters such as frequency, data rate, and bandwidth. Live signals in the HF band are monitored by applying the predetected output of an R-390A receiver directly to the signal analyzer. Photographs of the actual displays resulting from signals generated in the laboratory demonstrate the ability of the system to provide a distinctive display in each case. Various parameters of the input signal can be determined by measuring parameters of the display. The ability of the signal analyzer to determine the normalized autocorrelation function of a bandpass gaussian process is demonstrated. (Author)