Introduction to radar part vii 3 formation and processing of SAR image

Today, let's look at chapter 34 Chapter , Directory as follows ：

34. SAR Image formation and processing

34.1 Unfocused SAR

• 34.1.1 Signal processing requirements
• 34.1.2 Limitations of unfocused arrays

34.2 focusing SAR The limitations of

• 34.2.1 How to complete the focus

34.3 SAR Treatment process

• 34.3.1 Signal processing requirements
• 34.3.2 Reduce the calculation load ： Doppler processing
• 34.3.3 Doppler frequency VS azimuth
• 34.3.4 Realization
• 34.3.5 Realize the reduction of arithmetic operation
• 34.3.6 Similarity with conventional array concept

34.4 Motion compensation and self focusing

• 34.4.1 Limitation of uncompensated phase error

34.5 SAR Image interpretation

34.6 summary  

The principle of radar imaging is mainly based on the combination of antenna theory and signal processing concept . Synthetic aperture radar (SAR) It is currently the most widely used radar imaging technology . In this chapter, we will further study the principle of synthetic aperture radar , Especially the basic principle of digital processing .

Let's see first Unfocused SAR Imaging process , Unfocused SAR The most simple , The process is as follows