Results 261 to 270 of about 134,790 (308)
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IEEE Transactions on Aerospace and Electronic Systems, 1982
The track acquisiton range of a track-while-scan radar is defined as the range at which the cumulative probability of M detections in N scans is 90 percent. Track acquisition ranges for 2 out of 3, 2 out of 4, and 3 out of 4 detection criteria are presented for Swerling 0, 1, and 3 target models.
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The track acquisiton range of a track-while-scan radar is defined as the range at which the cumulative probability of M detections in N scans is 90 percent. Track acquisition ranges for 2 out of 3, 2 out of 4, and 3 out of 4 detection criteria are presented for Swerling 0, 1, and 3 target models.
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2010
When radar systems are discussed in the literature or the remainder of this text, it is in the context of a sensor providing observations of the environment. While some of those measurements are responses from coherent waveforms of finite duration, the environment is treated as stationary with at most linear motion on the targets.
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When radar systems are discussed in the literature or the remainder of this text, it is in the context of a sensor providing observations of the environment. While some of those measurements are responses from coherent waveforms of finite duration, the environment is treated as stationary with at most linear motion on the targets.
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SPIE Proceedings, 1990
This paper deals with the theory of monopulse angle tracking with a laser radar employing heterodyne detection. The detector is assumed to be of the quadrant type. The target's angular location is inferred from the location of its diffraction pattern in the detector plane.
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This paper deals with the theory of monopulse angle tracking with a laser radar employing heterodyne detection. The detector is assumed to be of the quadrant type. The target's angular location is inferred from the location of its diffraction pattern in the detector plane.
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1972
Abstract : The report describes an algorithm that is used to determine the maximum likelihood position of an aircraft from the measurement of one radar's range, azimuth, and elevation and from an altitude measurement of the aircraft. The variances of these measurements must also be known.
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Abstract : The report describes an algorithm that is used to determine the maximum likelihood position of an aircraft from the measurement of one radar's range, azimuth, and elevation and from an altitude measurement of the aircraft. The variances of these measurements must also be known.
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Track quality estimation for multiple-target tracking radars
Proceedings of the IEEE National Radar Conference, 2003A method is developed for estimating track quality for a multiple-target tracking radar, such as an electronically scanned array radar or track-while-scan system. It is assumed that tracking error residuals and error variance estimates are available, as is the case when minimum-variance track filters are used. A normalized distance function is selected
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Tracking noise measurements on a manual tracking radar
Transactions of the IRE Professional Group on Antennas and Propagation, 1952Tracking noise measurements have been made on a manual tracking, sector-scan radar, Methods have been devised to measure the operator's tracking error, which has been assumed to be the principal source of tracking noise. In tests made with an actual moving target, it is extremely difficult to distinguish between tracking errors and the true target ...
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Null-Tracking Doppler-Navigation Radar
IEEE Transactions on Aerospace and Navigational Electronics, 1963A Doppler navigation radar is described which can reduce sea-bias errors to a negligible degree. The technique also reduces all other errors which result from asymmetrical distortion of the echo spectrum. Spectrum distortion is caused by modulation effects (altitude holes), by angle-sensitive reflectivity of certain types of terrain, and by asymmetric ...
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Space based radar tracking filter
IEE Colloquium on `Algorithms for Target Tracking', 1995The problem of tracking air objects using a space based radar (SBR) constellation is addressed. Each satellite contains an electronically scanned phased array radar that is responsible for its own detection and tracking. The detailed design of an interacting multiple model (IMM) extended Kalman filter is expounded for this application.
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Cognition in radar target tracking
2017This chapter has been devoted to the design of a tracker exploiting cognition at multiple levels. Specifically, environmental maps and characteristics of the targets, available in the dynamic database possibly learned from the feedback channel, have been used to gain improved tracking performance in a multiple targets scenario exploiting measurements ...
De Maio, A. +4 more
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Glint Tracking Errors in Radar
2000Angle glint or “glint noise” refers to fluctuations in the measured angle of arrival of backscattered electromagnetic waves transmitted from a radar device. Active sonar tracking systems are also subject to glint noise for the same physical reason: When a target consists of many point reflectors, the backscattered waves from the individual elements ...
Douglas M. Patterson, Richard A. Ashley
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