Aerospace and Electronic Systems Magazine January 2018 - 48

Focus-Before-Detection: Part II
an interesting problem for target tracking, i.e., how to balance accuracy and time delay, especially for a highly maneuvering target.
Fourth, with the proposed 3DS-RFT and ST-RFT, the proposed
FBD methods may generate high-resolution images for targets in
a multidimensional and multidomain space, which may contain
plenty of information on target motion and backscattering structure. Therefore, how to generate these images in an efficient way
and platform and how to effectively use these images may be attractive, especially for the more and more urgent demands on the
feature extraction for ATR.
In summary, the proposed FBD-based methods have a lot potentials to effectively improve the performance on target detection,
parameter estimation, maneuvering track, high-resolution imaging
and target recognition for modern radar, while many challenges
still exist and more efforts are needed for future research.

CONCLUSIONS

[2]
[3]
[4]
[5]

[6]
[7]

[8]

[9]

To better use the proposed FBD methods for improving high-speed,
highly maneuvering, and weak target detection in an increasingly
challenging environment, nine recent research developments are
discussed in this article for FBD-based methods, namely fast implementations, BSSL suppression, multiple domains, multiple dimensions, multiple targets, background cancellation, micromotion
application, ultrahigh-speed target detection, and nonparametric
processing. Based on accurate environment sensing from echoes
and effective resource management, it is shown that the proposed
FBD-based methods can make use of these optimized resources to
effectively improve radar ability. Based on the existing FBD-based
methods, it is believed that more and more attractive and interesting methods will be proposed in the future for modern radar to face
more challenging targets and environments.

[10]

[11]

[12]

[13]

ACKNOWLEDGMENTS
This work was supported by the National Natural Science Foundation of China under Grant 61271391 and 61671061, 111 Project of
China Ministry of Education (MOE) under Grant B14010, New
Century Excellent Talents Supporting Plan of China MOE under
Grant NCET-13-0049, and Ministry Research Foundation under
Grant 6140415010216BQ01001. The authors would like to thank
Prof. H. Griffiths, Prof. M. S. Greco, Prof. E. Brookner, Prof. A.
P. Petropulu, Prof. J. Li, Prof. Y. L. Wang, Prof. H. He, Dr. S. B.
Peng, Dr. L. C. Qian, Dr. C. Z. Meng, Dr. X. Zhou, Dr. J. Yu, Mr. Q.
Kang, and Mr. M. Q. Li, and Mr. P. J. You for their valuable discussions to improve the quality of this article. They also wish to thank
Prof. M. S. Greco for her encouragement to make this submission
into two parts.

[14]

[15]

[16]

[17]

REFERENCES
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48

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