By Xiaolan Qiu
Synthetic Aperture Radar (SAR) is necessary for distant sensing. it really works day and evening, in strong climate or undesirable. Bistatic SAR is a brand new type of SAR procedure, the place the transmitter and receiver are put on separate structures. Bistatic SAR is likely one of the most crucial traits in SAR improvement, because the expertise renders SAR extra versatile and more secure whilst utilized in army environments. Imaging is among the so much tricky and significant features of bistatic SAR info processing. even though conventional SAR sign processing is totally built, bistatic SAR has a extra advanced process constitution, so sign processing is more difficult. concentrating on imaging facets of bistatic SAR sign processing, this ebook covers answer research, echo new release equipment, imaging algorithms, imaging parameter estimation, and movement reimbursement methods.
The e-book is perfect for researchers and engineers in SAR sign and knowledge processing, in addition to these operating in bistatic and multistatic radar imaging, and within the radar sciences. Graduate scholars with a historical past in radar who're attracted to bistatic and multistatic radar will locate this e-book a worthwhile reference.
- Gives a basic and up to date framework for photograph formation utilizing sign processing aspects
- Starts with an creation to standard SAR prior to relocating directly to extra complex topics
- Offers readers quite a number exhaustive instruments to method indications and shape images
- Provides a great reference for the imaging of different advanced SAR
- Sample photo synthesis routines can be found from the book's spouse site
Chapter 1 creation (pages 1–16):
Chapter 2 sign Processing foundation of SAR (pages 17–50):
Chapter three uncomplicated wisdom of Bistatic SAR Imaging (pages 51–81):
Chapter four Echo Simulation of Bistatic SAR (pages 83–110):
Chapter five Imaging Algorithms for Translational Invariant Bistatic SAR (pages 111–212):
Chapter 6 Imaging set of rules for Translational version Bistatic SAR (pages 213–271):
Chapter 7 Bistatic SAR Parameter Estimation and movement reimbursement (pages 273–312):
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Extra resources for Bistatic SAR Data Processing Algorithms
9) it can be found that the spectrum of a chirp signal can also be approximately regarded as a linear modulated signal. From a frequency domain aspect, it is the time that is modulated 22 Bistatic SAR Data Processing Algorithms (the time is f /kr ), that is, the time changes with frequency. So the LFM pulse can be regarded as a time domain extension of the wide-bandwidth narrow-time-duration pulse, which is to extend a narrow pulse with bandwidth B (usually the pulse is as narrow as 1/B in the time domain) to a wide pulse with pulse duration time T, T = B/ |kr |.
For a radar that can detect targets within several hundred miles, if a strong capability in target detection is required, the transmitting power needs to be extremely high. For a narrow-pulse radar, this means that it needs to reach an extremely high power within an extremely short time, which is very hard to realize. 2 Classical Theory of SAR Resolution Obviously, the above deﬁnition about SAR resolution is experiential and rough, which cannot be regarded as strict radar resolution theory. After Woodward introduced Probability Theory and Information Theory to the radar domain, he and other later scholars systematically built an entire serious theory of ambiguous function .
52), it can be found that the phase in the last term is a function of two variables (f and fη ), which represents the coupling of the range and azimuth caused by RCM. It is the existence of this coupled phase that makes the SAR imaging processing very complicated. Typically, the frequency bandwidth of the transmitted signal is quite narrow compared with the radar carrier frequency (except for ultra wideband radar), that is, |f| f 0 . 53) ⎫ ⎪ ⎬ 3⎪ ⎭ (second-order term) (third-order term) In the above equation, the zero-order term only depends on the azimuth frequency, so there is no coupling in this term.