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噪声是无线电工程的基本问题之一,是放大设备和接收系统的重要设计参数,整机的灵敏度和使用范围均受到噪声的限制。在射电天文、雷达、卫星通信和散射迅通等无线电技术工程中,噪声的分析具有重大的意义。噪声的类型较多,如闪烁噪声、接触噪声、大气噪声、星际噪声、起伏噪声等,但
Noise is one of the basic problems in radio engineering. It is an important design parameter for amplifying equipment and receiving systems. The sensitivity and scope of the whole machine are limited by the noise. In radio astronomy, radar, satellite communications and scattering XunTong and other radio technology projects, the analysis of noise is of great significance. There are many types of noise, such as flicker noise, contact noise, atmospheric noise, interstellar noise, fluctuation noise, etc. However,