In the mid-nineteenth century, James Clark Maxwell, a British mathematician, developed a unified theory of electricity and magnetism. The equations predicting the behavior of electromagnetic signals, known as Maxwell's equations, led to discoveries that include radar waves. Maxwell's equations can be used to derive representations of radar signals propagating in various media, and for this purpose we can use the equations to derive a free space propagation of radar signals. These signal representations will be useful in understanding the impact of error sources on angle-of-arrival estimation using interferometric radar.

Chapter Contents:

• 3.1 Signal Propagation and Representation
• 3.2 Continuous Wave Doppler Waveforms
• 3.3 Pulse Doppler Waveforms
• 3.3.1 Basic Pulse-Doppler Parameters
• 3.3.2 Pulse Modulation and the Time-Bandwidth Product
• 3.3.3 Pulse Doppler Waveform Processing and Pulse Compression
• 3.4 Radar Range Equation
• 3.5 Phase Error
• 3.5.1 Thermal Noise
• 3.5.2 Clutter
• 3.5.3 Multipath and Interference
• References

Inspec keywords: radar interferometry; electromagnetic wave propagation; radar signal processing; Maxwell equations; direction-of-arrival estimation; signal representation

Other keywords: error source impact; angle-of-arrival estimation; electromagnetic signal; Maxwell's equation; radar wave; radar signal media propagation; electricity theory; interferometric radar; magnetism theory; signal representation; free space propagation

Subjects: Radar equipment, systems and applications; Electromagnetic wave propagation; Signal processing and detection