IEEE

SPECIAL LECTURE: May 29th, 2014 : Frequency modulated continuous wave radars: A gentle introduction to angle resolution and its challenges

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IEEE SIGNAL PROCESSING SOCIETY, BANGALORE CHAPTER

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DEPARTMENT OF ECE, INDIAN INSTITUTE OF SCIENCE

2014 – SPECIAL LECTURE – 2

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Title:  Frequency modulated continuous wave radars: A gentle introduction to angle resolution and its challenges
 
Date: Thursday, May 29th, 2014
Time: 4pm
Tea/coffee: 3.45pm
Venue: Golden Jubilee Hall, ECE Department, IISc Bangalore
Speaker: Sandeep Rao, Texas Instruments India
 
Abstract :
77GHz FMCW radars have been used in the automotive and niche industrial applications for a while now. However as technology improves and the levels of integration increase, there is a tremendous potential for these radars to be used in wide variety of other applications. As the use of radar becomes more wide-spread, its design becomes more cost-sensitive. One of the key design aspects which contributes to the cost of an FMCW radar is the number of antennas. Hence the motivation to get the maximum performance out of a small number of antennas. The first part of this talk will be a survey of some relevant aspects of angle estimation. We will highlight the importance  of multi-resolution techniques and discuss some related algorithms (MUSIC, ML based). We will also discuss techniques for improving angle resolution through appropriate array design.  In this context we will survey the concepts of  Active beam-forming, passive beam-forming and   synthetic aperture radar. The second part of the talk will focus on angle estimation specifically in the context of low cost FMCW radar systems. The interdependence between angle resolution, range resolution and velocity resolution will be discussed. We will discuss the open challenges in achieving acceptable angle resolution with a minimum number of non-ideal antennas. These challenges span multiple areas : antenna design, angle resolution algorithms, blind and non-blind calibration techniques, detection algorithms and sensor fusion. Application specific challenges will also be discussed.

ABOUT THE SPEAKER:
Sandeep Rao is with the systems group in the wireless division at Texas Instruments and currently looks at system and algorithmic aspect of automotive radars. Earlier he led the GPS positioning algorithm development effort at TI. Prior to TI, he was with Hughes Network Systems where he was involved in the development of modem algorithms for satellite communications. He has a Masters from the University of Maryland and a Bachelors from the Indian Institute of Technology Madras.

All are invited

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