, Douglas Cochran , and Muralidhar Rangaswamy ] Waveform - Agile Sensing for Tracking
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چکیده
1053-5888/09/$25.00©2009IEEE IEEE SIGNAL PROCESSING MAGAZINE [53] JANUARY 2009 W aveform-agile sensing is motivated by the improvements in performance that can result when the transmitted waveform is dynamically tailored to match the sensing objective and the environment. Waveform agility in active radar systems can provide performance improvements such as reduced target-tracking error, improved target detection, higher target identification accuracy, and increased efficiency of sensor usage. While advances in sensor technology and flexible digital waveform generators that enable dynamic waveform design and adaptation have only been recently developed [2], [11], [36], bats and dolphins have exploited these features in their echolocation for millions of years [1], [16]. In target tracking, where target information is sequentially incorporated, changes in target-sensor geometry and the sensing environment imply that the tracker’s requirements for information are constantly changing. Dynamic waveform adaptation provides a sensing methodology by designing the next transmitted waveform to optimally meet the tracker’s requirements as depicted in Figure 1. This methodology can be compared to a mathematical game of twenty questions between the sensor and the environment in which the selected waveforms play the role of the questions [9]. [Sandeep P. Sira, Ying Li, Antonia Papandreou-Suppappola, Darryl Morrell, Douglas Cochran, and Muralidhar Rangaswamy]
منابع مشابه
Waveform-Agile Sensing and Processing
IEEE SIGNAL PROCESSING MAGAZINE [10] JANUARY 2009 I magine being able to recognize objects under water while swimming, just like dolphins do, or being able to locate objects while actively homing in, just like bats do. Echolocation in these mammals has evolved over millions of years. Initial returns are processed to locate and identify objects, and then the mammal adapts the time-frequency sign...
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