| 1. | In chapter 5 , the main channel impairments , such as rain attenuation , clear air absorption and distortion due to the hpa , are covered and approaches to overcome them are suggested
从雨衰、大气的吸收以及高功率放大器hpa等方面对lmds系统的性能恶化等方面做了仔细的研究，并针对这些不同的情况，提出了一些建议性解决方法。 |
