分米波段背景噪声电平的测量方法及数据分析

论述了分米波段天线背景噪声电平测量的重要作用、基本条件和要求。介绍了其测量系统灵敏度的估值方法，及在工程上用定标的技术参数计算灵敏度的公式。测量结果表明理论计算和测量数据处理结果符合得很好，证明该测量系统灵敏度满足估算要求、工程计算方法及实施的测量方法较用传统的天定标测量后反推算的方法简便易行；测量数据质量也较好，与天方法测量所得的数据相吻合。同时给出系统测量原理方框图，定标的技术参数和技术路线等。并对测量结果进行了分析和讨论。

The Measurement Method and Data Analysis of Decimeter Wave Band Background-Noise's Level

The paper discusses the importance of background-noise's level of dec imeter wave-band on antenna and its basical technical condition and request. It also introduces the method to estimate the maximum sensitivity of antenna receiv e and measure system and the formula which calculates the sensitivity with techn icals parameter the calibration in engineering applications. The measurement re sults show that the data analysis results of actual measurement are well fitted to theoretical calculation.This proves the sensitivity of the measurement system is satisfied the estimation and enginleering calculation method,and this method is simpler than the traditional method which is the astronomical calibration me asurement and anti-predication,the measurement results are also fitted to the as tronomical method. The paper also gives the theory frame figure of measurement i n background-noises temperature, the technical parameter of Calibration and its technical route etc. And analyzes and discusses measurement results.