一、华南地区大气无线电噪声测量 完成单位:机电部二十二所、广电部标准化规划研究所 本项目利用单边带接收机、配以微机控制、编写软件,完成了大气无线电噪声自动测量系统,填补了国内空白;研究结论为参加CCIR会议提供了科学依据,也为进一步开展我国大气无线电测量工作奠定了基础。 二、调频立体声“FMX”系统 完成单位:北京广播学院 “FMX”系统是FM立体声广播的一种新系统。本项目通过闭路实验和开路试播,验证了“FMX”系统能显著改善弱信号地区立体声广播接收的信噪比,扩大了覆盖范围;研制的编、解码器具有新颖性和创造性,性能 I. Measurement of Atmospheric Radio Noise in South China Unit: 20 Electromechanical Department, Institute of Standardization and Planning, Radio and Television Department The project uses single-sideband receiver, computer control and software to complete the automatic measurement system of atmospheric radio noise, Which filled the gap in China. The conclusion of the study provided a scientific basis for attending the CCIR meeting and laid the foundation for further carrying out atmospheric radio measurement in China. Second, the FM stereo “FMX” system to complete the unit: Beijing Broadcasting Institute “FMX” system is FM stereo broadcast a new system. This project verifies that “FMX” system can significantly improve the signal-to-noise ratio of stereo broadcast reception in weak signal area and enlarge the coverage through closed-circuit experiment and open pilot. The developed codec has the characteristics of novelty and creativity, performance