Adaptive-adaptive array processing

Brookner, Eli; Howell, James M.

doi:10.1109/proc.1986.13507

Cited by 75 publications

(23 citation statements)

References 4 publications

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“…The beam steering agility provided by an ESA does not provide any inherent electronic protection benefits when monopulse direction estimation is used except perhaps to track interference sources that are far in angle from the main target of interest. The important capabilities of spatial electronic protection are provided by beam shape agility or more specifically by having some additional spatial DOF in the formation of the antenna beam (Brookner and Howell, 1986;Hatke, 1997;Zatman, 1999). It is the presence of additional spatial DOF that provide electronic protection, not the fact that the beam is steered electronically.…”

Section: Spatial Dofs and Electronic Protectionmentioning

confidence: 99%

Radar Missile Seekers

Baker¹,

Zyweck

2010

Encyclopedia of Aerospace Engineering

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Modern missiles represent an example of a highly integrated set of subsystems that all interact cooperatively to guide the missile to its target. The key to intercepting moving targets is the missile seeker, and for all weather, day/night, and long‐range performance, the RF seeker is the preferred option. RF seekers are often viewed as “little” airborne intercept (AI) radars. There are considerable functional differences between RF seekers and their larger cousins because of the different requirements for missile guidance when compared to airborne surveillance. This chapter begins by reviewing the characteristics of a modern RF missile, which impact the RF seeker requirements. The role of the RF seeker is then explored and differences between RF seekers and AI radars are highlighted. The key figures of merit for RF seeker performance are reviewed and their effects on modern RF seeker design are explained. There have been many different RF seeker designs over the years but the modern active coherent seeker is currently prevalent. The key aspects of a generic active RF seeker configuration are discussed. Finally, some advanced RF seeker trends are discussed. The benefits of increased operating frequency and instantaneous bandwidth are covered as well as the emerging requirement to reduce seeker signatures for improved effective engagement range and compatibility with low observable launch platforms. Several aspects of seeker design that improve electronic protection are also discussed.

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Section: Spatial Dofs and Electronic Protectionmentioning

confidence: 99%

Radar Missile Seekers

Baker¹,

Zyweck

2010

Encyclopedia of Aerospace Engineering

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“…19, 23 Nulls can be placed in a conventional antenna's sidelobes in the direction of unwanted noise sources to keep them from entering the receiver. This is called a sidelobe canceler.…”

Section: Adaptive Nullingmentioning

confidence: 99%

Systems Aspects of Digital Beam Forming Ubiquitous Radar

Skolnik¹

2002

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Approved for public release; distribution is unlimited.LUULU 1 ■ v m 1 U y REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704-0188Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information it it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY) SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES)Naval Research Laboratory 4555 Overlook Avenue Washington, DC 20375-5320 SPONSOR / MONITOR'S ACRONYM(S) SPONSOR / MONITOR'S REPORT NUMBER(S) DISTRIBUTION /AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTES ABSTRACTThis paper describes the general characteristics and potential capabilities of digital beam forming (DBF) ubiquitous radar, one that looks everywhere all the time. In a ubiquitous radar, the receiving antenna consists of a number of fixed contiguous high-gain beams that cover the same region as a fixed low-gain (quasi-omnidirectional) transmitting antenna. The ubiquitous radar is quite different from the mechanically rotatingantenna radar or the conventional multifunction phased-array radar in that it can carry out multiple functions simultaneously rather than sequentially. Thus it has the important advantage that its various functions do not have to be performed in sequence one at a time, something that is a serious limitation of conventional phased arrays. A radar that looks everywhere all the time uses long integration times with many pulses, which allows better shaping of Doppler filters for better MTI or pulse Doppler processing. The DBF ubiquitous radar is a new method for achieving important radar capabilities not readily available with current radar architectures. (See page v for the complete abstract.) SUBJECT TERMS AbstractThis paper describes the general characteristics and potential capabilities of digital beam forming (DBF) ubiquitous radar, one that looks everywhere all the time. In a ubiquitous radar, the receiving antenna consists of a number of fixed contiguous high-gain beams that cover the same region as a fixed lowgain (quasi-omnidirectional) transmitting antenna. The ubiquitous radar is quite different from the mechanically rotating-antenna radar or the conventional multifunction phased array radar in that it can carry out multip...

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“…But for phased array radar, it is undesired to implement fully adaptive beamforming with thousands of elements, which requires heavy complexity for computing and storing. Therefore, it is necessary to reduce the processing dimension [1][2][3] before adaptive beamforming. The adaptive-adaptive beamforming algorithm [3] presented by Brookner can achieve better performance of adaptive jamming cancellation due to the matches between the subbeamspace and partially adaptive freedom degree.…”

Section: Introductionmentioning

confidence: 99%

Adaptive-adaptive beamforming algorithm of planar array based on one-dimensional auxiliary beam

Li¹,

Rao²,

Dai³

et al. 2010

2010 3rd International Congress on Image and Signal Processing

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To avoiding two-dimensional search for the incoming angle of jamming while constructing twodimensional auxiliary beams, an adaptive-adaptive beamforming algorithm of planar array based on onedimensional auxiliary beam is presented in this paper. Owing to only need to estimate one-dimensional spatial angle of jamming, computational complexity of searching for the incoming angle of jamming can be reduced greatly. Thus, the approach is fit for engineering implementation. Computer simulations demonstrate the validity finally.

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Adaptive-adaptive array processing

Cited by 75 publications

References 4 publications

Radar Missile Seekers

Radar Missile Seekers

Systems Aspects of Digital Beam Forming Ubiquitous Radar

Adaptive-adaptive beamforming algorithm of planar array based on one-dimensional auxiliary beam

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