Subjective evaluation of FM/FM protection radio for television broadcasting by satellite, appendices
Abstract
Subjective measurements of the interference between two FM TV signals at the same carrier frequency and at different carrier frequencies are described. There is no masking of the interference due to additive Gaussian noise in the wanted channel. The results do not support the conclusion that an impairment grade of 4.5 on the CCIR scale is subjectively equivalent to just perceptible interference. A comparison of results of measurements of the protection ratio and its variation with frequency offset with those obtained by others shows good agreement.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- December 1980
- Bibcode:
- 1980STIN...8120325L
- Keywords:
-
- Carrier Frequencies;
- Satellite Television;
- Signal To Noise Ratios;
- Frequency Modulation;
- Random Noise;
- Communications and Radar