Results 221 to 230 of about 16,631 (258)

Radar speckle: noise or information?

IGARSS '96. 1996 International Geoscience and Remote Sensing Symposium, 2002
The authors examine radar speckle from a non-traditional perspective. Instead of viewing radar speckle as noise, they attempt to assess the information content of radar speckle. A speckle identification algorithm is developed to separate speckle from pixels of "normal" returns. The relationships between land cover types and the density and roughness of
null Zong-Guo Xia, null Yongwei Sheng
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Evolution of Quantum Radar Concept to Noise Radar Concept

IEEE Aerospace and Electronic Systems Magazine, 2020
Preliminary results of the comparative analysis of quantum radar (QR) based upon quantum entanglement phenomenon and noise radar (NR) based upon classical coherence and correlation processing of random signals are presented in this article. Common and distinguishing features of NR and QR are briefly discussed.
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Detection of radar echoes in noise revisited

IEEE Transactions on Information Theory, 1966
The analysis of radar detection probability in the presence of unknown parameters, given by Kelly, Reed, and Root for maximum-likelihood detection procedures, is extended in this paper to cases where the detection procedures still belong to the class of maximum-likelihood procedures, but the actual waveform, or noise covariance, or both, may differ ...
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Noise MIMO Radar

2011
The ability of MIMO radar to measure propagation delays from each transmitter to each receiver allows the concept of the sum co-array, reviewed, to be exploited. The sum co-array allows virtual elements to be synthesized and in some cases this can lead to performance advantages. The relationship of the ES matched filter to the sum co-array is discussed
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Noise Radar Technology

2017
The well-known classical pulse radar has several disadvantages. The high transmitted peak power can be easily detected and warn an enemy, and the ambiguities in both range and Doppler measurements lead to problems with unambiguous localization and tracking.
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Radar cross-sectional study using noise radar

SPIE Proceedings, 2015
A noise radar system is proposed with capabilities to measure and acquire the radar cross-section (RCS) of targets. The proposed system can cover a noise bandwidth of near DC to 50 GHz. The noise radar RCS measurements were conducted for selective targets like spheres and carpenter squares with and without dielectric bodies for a noise band of 400MHz ...
A. P. Freundorfer, J. Y. Siddiqui, Y. M. M. Antar   +2 more
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The noise characteristics of radar receivers

Journal of the Institution of Electrical Engineers - Part IIIA: Radiolocation, 1946
The various quantities which determine the performance of radar receivers are discussed. Most of the effort towards improvement has been concentrated on securing the lowest possible noise-factor in amplifiers and mixers and this is the main theme of the paper.
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Dedicated applications of Noise Radars

2015 16th International Radar Symposium (IRS), 2015
a novel approach for design of Radar sensor for shot range applications based upon Noise Radar Technology is presented. This radar technology relies on transmitting of wideband noise/random signals and coherent processing of radar returns. We have carried out experiments on generation of 2D and 3D tomographic imaging using Ka-band continuous waveform ...
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On the theory of noise Doppler radar

IGARSS 2000. IEEE 2000 International Geoscience and Remote Sensing Symposium. Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment. Proceedings (Cat. No.00CH37120), 2002
Presently, there is an increasing interest in noise modulated radar in a wide spectrum of applications, such as surveillance, tracking, altimetry, and sub-surface profiling. Wide-band signals with high range resolution, reduced ambiguities and high ECCM performance can be achieved. In this paper, the theory of noise modulated radar is treated.
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Estimating Correlation Coefficients for Quantum Radar and Noise Radar: A Simulation Study

2019 IEEE Global Conference on Signal and Information Processing (GlobalSIP), 2019
For target detection, quantum two-mode squeezing (QTMS) radars and noise radars require estimation of a covariance matrix. A scalar function of the covariance matrix is then used for deciding the presence or absence of a target. In this paper, estimation of the covariance matrix is carried out by minimizing the Frobenius norm between the sample ...
David Luong, Sreeraman Rajan, Bhashyam Balaji   +2 more
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