The Application of Spectrum Signature Data to Interference Analysis

Equipment characteristics for compatibility analysis can be obtained from statistical reduction of spectrum signature data. However, practical measurement limitations such as dynamic range, receiver sensitivity, and signal generator power impose limitations on the resultant data. As a result of these limitations, certain transmitter outputs, receiver responses, or regions of an antenna pattern may be beyond the range of the measurement instrumentation. If such data are reduced without regard to the bias thus introduced, the statistical representations derived from the data samples will be in error. This paper discusses the significance of data samples obtained from a population that is ¿truncated¿ as a result of measurement limitations, and discusses the consequences of overlooking the fact that some of the data samples are missing.