Results 11 to 20 of about 779,461 (277)

Joint radar-communication waveform designs using signals from multiplexed users [PDF]

open access: yes, 2020
Joint radar-communication designs are exploited in applications where radar and communications systems share the same frequency band or when both radar sensing and information communication functions are required in the same system.
Cao, Ning   +3 more
core   +1 more source

Radar spectrum opportunities for cognitive communications transmission [PDF]

open access: yes, 2008
In relation to opportunistic access to radar spectrum, the impact of the radar on a communication system is investigated in this paper. This paper illustrates that by exploring the spatial and temporal opportunities in the radar spectrum and therefore ...
Doufexi, A   +3 more
core   +3 more sources

MIMO Radar Ambiguity Properties and Optimization Using Frequency-Hopping Waveforms [PDF]

open access: yes, 2008
The concept of multiple-input multiple-output (MIMO) radars has drawn considerable attention recently. Unlike the traditional single-input multiple-output (SIMO) radar which emits coherent waveforms to form a focused beam, the MIMO radar can transmit ...
Chen, Chun-Yang, Vaidyanathan, P. P.
core   +2 more sources

TanDEM-X Long-Term System Performance After 10 Years of Operation

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The TanDEM-X mission, formed by the TanDEM-X satellite in cooperation with its almost identical twin TerraSAR-X (TSX), has mainly been designed to acquire bistatic synthetic aperture radar (SAR) images of the Earth. Initiated in 2010, the primary mission
Allan Bojarski   +11 more
doaj   +1 more source

Detection & tracking method for radar target based on plot-track quality evaluation

open access: yesThe Journal of Engineering, 2019
A joint target detection and tracking method based on plot-track quality evaluation (PTQE-D&T) is proposed here. The presented method consists of three consecutive steps.
Yonghong Xia   +3 more
doaj   +1 more source

On the Derivation of Volume Decorrelation From TanDEM-X Bistatic Coherence

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
The bistatic interferometric coherence is affected by different sources of error, among which volume decorrelation, which quantifies the amount of noise caused by volume scattering mechanisms.
Paola Rizzoli   +5 more
doaj   +1 more source

The TanDEM-X Mission Phases—Ten Years of Bistatic Acquisition and Formation Planning

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
TanDEM-X is a formation flying interferometer consisting of two SAR satellites. Together they acquire bistatic SAR data of the earth in order to generate a global digital elevation model as well as individual scientific interferometric datasets on user ...
Markus Bachmann   +11 more
doaj   +1 more source

QUALITY ASSESSMENT FOR THE FIRST PART OF THE TANDEM-X GLOBAL DIGITAL ELEVATION MODEL [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
TanDEM-X is an innovative synthetic aperture radar (SAR) mission with the main goal to generate a global and homogeneous digital elevation model (DEM) of the Earth’s land masses.
B. Bräutigam   +8 more
doaj   +1 more source

POLSAR Target Recognition Using a Feature Fusion Framework Based on Monogenic Signal and Complex-Valued Nonlocal Network

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
With the continuous development of synthetic aperture radar (SAR) systems, multipolarization information has been increasingly applied to numerous fields, and automatic target recognition (ATR) in polarimetric SAR (POLSAR) has been recognized as vital ...
Feng Li   +5 more
doaj   +1 more source

Empirical Analysis of Chirp and Multitones Performances with a UWB Software Defined Radar: Range, Distance and Doppler [PDF]

open access: yes, 2014
In this study, a protocol for an unbiased analysis of radar signals' performance. Using a novel UWB software-defined radar, range profile, Doppler profile and detection range are evaluated for both Linear Frequency Modulated pulse and Multitones.
Gray, Derek   +2 more
core   +1 more source

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