Characteristics of Microwave Receivers
In this chapter, some common terms representing the characteristics and performance of EW receivers will be discussed. These terms include sensitivity, dynamic range, probability of intercept (POI), and throughput rate. Although used on a daily basis, some of these terms are not clearly defined and others have too many definitions. This chapter will discuss the different definitions and try to clarify them. Among all the terms, emphasis will be placed on receiver sensitivity and dynamic range. Important concepts used to design receivers will also be included. In the discussion of receiver sensitivity, the effect of video bandwidth will be included. The sensitivity is a function of the ratio of radio-frequency (RF) bandwidth to video bandwidth. Curves will be provided to predict the receiver sensitivity. Most of the receiver measurements will be discussed in Chapter 12. However, the measurement of false alarm rates will be discussed in this chapter, because it is closely related to the sensitivity of the receiver. The equations used to calculate the sensitivity of a receiver are also used to calculate the false alarm rate. Examples will be presented to demonstrate utilization of the equations and curves.
Characteristics of Microwave Receivers, Page 1 of 2
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