In this chapter, the authors look at the Doppler shift more closely-first, in terms of the compression or expansion of wavelength and, second, in terms of the continuous shift of phase. It was then pointed out the factors which determine the Doppler frequencies of the return from both aircraft and the ground. Finally, the special case of the Doppler shift of a target's echoes as observed by a semiactive missile was considered.

Chapter Contents:

• Doppler Effect and Its Causes
• Where and How the Doppler Shift Takes Place
• Magnitude of the Doppler Frequency
• Doppler Frequency of an Aircraft
• Doppler Frequency of Ground Return
• Doppler Frequency Seen by a Semiactive Missile

Inspec keywords: military radar; Doppler effect; missiles; airborne radar

Other keywords: semiactive missile; Doppler frequencies; airborne radar; Doppler shift; Doppler effect

Subjects: Radar equipment, systems and applications; Radar theory; Weapons; Radar and radiowave systems (military and defence)