www.radartutorial.eu Radar Basics

Chapter: Radar Receiver Technology

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Radar Receiver
AFC-System
Block diagram of an automatic frequency control in a radar set.
Radar Receiver
AFC-System

Figure 1: Block diagram of an automatic frequency control in a radar set

Chapter: Radar Receiver Technology

The function of the receiver is to take the weak echoes from the antenna system, amplify them sufficiently, detect the pulse envelope, amplify the pulses, and feed them to the indicator. The receivers used in radars are capable of accepting weak echoes and increasing their amplitudes by a factor of 20 or 30 million. Since radar frequencies are not easily amplified, a superheterodyne receiver changes the radio frequency to an intermediate frequency for amplification.

Radar Receiver
AFC-System

Figure 2: Block diagram of an automatic frequency control in a radar set.

Learning objectives:

The learning objectives serve as a preview of the information you are expected to learn in the chapter. This chapter provides the basis for understanding the specific radar receivers. Upon completion of this chapter, the student will be able to:

  • list the basic design requirements of an effective radar receiver;
  • describe the fundamental heterodyning process;
  • list the major sections of a typical radar receiver;
  • using a block diagram, describe the operational characteristics of a typical radar receiver.