Showing 1-25 of 5,464 resultsfor "Index Terms":Passive Radar
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In this paper recent results of passive SAR imaging using a Digital Video Broadcasting-Terrestrial (DVB-T) transmitter as an illuminator of opportunity are presented. In the experiment the passive radar receiver was mounted on an airborne platform. The main goal was to verify the possibility of ground imaging using passive SAR technology utilizing ground based illuminators of opportunity.Show More
This paper presents a study on the possibility of using Synthetic Aperture Radar (SAR) and Inverse SAR (ISAR) imaging techniques in passive radars, utilizing commercial continuous wave transmitters as illuminators of opportunity. In presenting potential applications of this novel technology, obtainable maximum ranges and resolutions in passive SAR/ISAR technology are discussed. In the paper the ma...Show More
This paper presents the analysis and simulation results of a ground stationary passive synthetic aperture radar (SAR) receiver using a spaceborne SAR as an illuminator. In the paper, the bistatic geometry of passive SAR is presented and the expected resolutions are discussed and compared to the monostatic case. Finally, the results of the signal processing for both active and passive SAR imaging a...Show More
The concept of airborne passive radar
2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM
Year: 2011 | Conference Paper |
Cited by: Papers (26)
This paper presents the concept of an airborne passive radar and the preliminary results of the experiments carried out using two mobile platforms: a car and an aircraft. In the research conducted for the study of this concept, a passive radar mounted to an aircraft was used. The radar utilizes signals transmitted by illuminators of opportunity, e.g. FM radio or DVB-T transmitters. In this way, it...Show More
Experimental Results of Passive SAR Imaging Using DVB-T Illuminators of Opportunity
In this letter, pioneering experimental results of passive synthetic aperture radar (SAR) imaging are presented. The classical active SAR radar operates in monostatic geometry. The SAR sensor presented in this letter is a passive radar utilizing commercial Digital Video Broadcasting-Terrestrial transmitters as illuminators of opportunity. It works in a bistatic configuration, where the receiver is...Show More
Passive Synthetic Aperture Radar Imaging Using Radio-Astronomical Sources
Sean T. Peters;Dustin M. Schroeder;Mark S. Haynes;Davide Castelletti;Andrew Romero-Wolf
Recent work has demonstrated a passive radio sounding approach that uses the Sun as a source for echo detection and ranging. As the Sun is a moving source with a position that is known a priori, we evaluate this technique’s capabilities to measure the echo’s phase history, map topography, and perform synthetic aperture radar (SAR) focusing. Here, we present our approach to implementing passive SAR...Show More
In this paper, digital video broadcasting (DVB-T) transmitters are considered for passive SAR imaging of ground scenarios. A multilook processing scheme is proposed to reduce image noise, to improve the interpretation of the radar image and to make possible the correct detection and area delimitation of scattering targets in the radar scene. A measurement campaign was carried out to analyse and va...Show More
The paper presents an analysis of radar image distortions caused by using the Polar Formation Algorithm (PFA) for Inverse Synthetic Aperture Radar (ISAR) image creation in multistatic passive radar. The Passive ISAR technology is still in the development stage, and many challenges and limitations have to be overcome before it would be applied in the commercial operating passive coherent location (...Show More
In this paper, we presents a passive radar imaging algorithm based on signals received from multiple television stations at various aspect angles and bistatic equivalence theorem. The algorithm reconstructs a target image by synthesizing the subapertures of multiple television stations available into a large equivalent aperture. In addition to the high efficiency in imaging and low complexity in c...Show More
In this paper the topic of joint active and passive (hybrid) radar detection is introduced and the theoretical benefits are outlined. An experimental hybrid radar setup is presented where a low-cost Software Defined Radio (SDR) based radar system is used for hybrid sensing of targets using active and Passive Bistatic Radar (PBR). Experimental results are presented for simultaneously sensing using ...Show More
Passive Synthetic Aperture Radar Imaging Using Low-Rank Matrix Recovery Methods
We present a novel image formation method for passive synthetic aperture radar (SAR) imaging. The method is an alternative to widely used time difference of arrival (TDOA) or correlation-based backprojection method. These methods work under the assumption that the scene is composed of a single or a few widely separated point targets. The new method overcomes this limitation and can reconstruct het...Show More
Simulation of Effect of Periodically Missing Samples on Decoding in Passive Synthetic Aperture Radar System Using OFDM
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium
Year: 2019 | Conference Paper |
Cited by: Papers (4)
Passive synthetic aperture radar using transmitters of opportunity can be used for remote sensing, using frequency bands that are not normally allowed for transmitting radars. Passive radars do not transmit but instead use signals from other transmitting sources. Useful signal modulations for passive radar include OFDM (Orthogonal Frequency Division Multiplexing) signals for digital TV following t...Show More
Digital television based passive bistatic radar system for drone detection
Yuqi Liu;Xianrong Wan;Hui Tang;Jianxin Yi;Yiyao Cheng;Xun Zhang
Recently, the widespread availability of consumer grade drones is responsible for the new concerns of air traffic control. This paper investigates the feasibility of drone detection by passive bistatic radar (PBR) system. Wuhan University has successfully developed a digitally multichannel PBR system, which is dedicated for the drone detection. Two typical trials with a cooperative drone have been...Show More
A new method of the virtual TDOA estimation for the passive radar source localization based on PSAAA
2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)
Year: 2016 | Conference Paper |
Cited by: Papers (4)
The passive synthetic aperture antenna array (PSAAA) technology is inspired by the idea of synthetic aperture sonar and synthetic aperture radar, which is a new method used to the passive radar source localization using only one small aircraft. Virtual time difference of arrival (VTDOA) estimation is critical for the PSAAA technology, it is defined as the time difference of the radar pulse transmi...Show More
Passive radar multi-target detection experimental study at sea
2024 9th International Symposium on Computer and Information Processing Technology (ISCIPT)
Year: 2024 | Conference Paper |
The non-cooperative dual-base radar provides superior performance in terms of safety and robustness of target detection. This paper presents a series of experimental maritime target detections using a passive radar system and the collection of a large amount of data. The first is an introduction to the principle of passive radar and the key technologies involved, the next step is to describe the e...Show More
Seaborne Passive Radar System: Results of an Observation Campaign
2024 21st European Radar Conference (EuRAD)
Year: 2024 | Conference Paper |
We report the results of a maritime observation campaign conducted on the Gulf of Finland during the spring 2023, using a ship-based mobile bistatic passive radar system exploiting DVB-T broadcasts. We also discuss the feasibility of the Over-the-Horizon surveillance and the direction-of-arrival estimation.Show More
A radar signal simulator for DAB based passive radar
2009 International Radar Conference "Surveillance for a Safer World" (RADAR 2009)
Year: 2009 | Conference Paper |
This paper describes a simulator for a digital audio broadcast (DAB) based passive radar system. Sample scenarios comprising a receiver, a target and several illuminators are given. DAB transmission signals are simulated, and an estimate of the signal arriving at the receiver is calculated. The received signal is made up of weak target returns and strong direct signal interference (DSI). Simulated...Show More
Cyber Attacking Active FMCW Radar Signal AoA Estimation Using Passive FMCW Radar for ADAS Applications
Alli Sai Prakash;Vandana G S;Ashwin Nandagiri;Pathipati Srihari;Bethi Pardhasaradhi;Linga Reddy Cenkeramaddi
2024 IEEE 13th International Conference on Communication Systems and Network Technologies (CSNT)
Year: 2024 | Conference Paper |
Millimeter-wave (mmWave) radars are a popular choice for Advanced Driver Assistant Systems (ADAS) that identify and track objects in the field of view. These mmWave radars (the primary radar on ego vehicles) are susceptible to interference signals from other mmWave radars (secondary radars on traffic participant vehicles) in the vicinity, which can result in false detection and tracking triggers. ...Show More
GNSS-based multistatic passive radar imaging of ship targets
Fabrizio Santi;Debora Pastina;Michail Antoniou;Mikhail Cherniakov
2020 IEEE International Radar Conference (RADAR)
Year: 2020 | Conference Paper |
Cited by: Papers (10)
This work brings forward a framework for passive radar imaging of ship targets by exploiting the reflections of navigation satellite signals. The specific objective is taking advantage of the inherent multistatic nature of the system for the ship passive imagery. To this aim, a bistatic image formation stage is first defined. Then, the bistatic images obtained over multiple baselines are mapped in...Show More
A Digital Beamforming Fast-Start Passive Radar for Indoor Motion Detection and Angle Estimation
As wireless sensing and communications technologies continue to advance, the limited bandwidth in the microwave and millimeter-wave spectra has sparked new research in improved spectrum efficiency. Microwave radar sensors have seen considerable use as a noncontact sensor but contribute to spectrum congestion when many radar sensors are placed in one environment. Furthermore, traditional radar sens...Show More
An Image Regulation Technique for Passive Millimeter Wave Focal Plane Array Imaging Radar System
2006 CIE International Conference on Radar
Year: 2006 | Conference Paper |
Passive millimeter wave imaging radar systems provide advantages over the optical and infra-red (IR) systems, especially under the poor weather with fog, clouds and light drizzle which are effectively transparent at millimeter wavelength. Due to the higher diffraction in millimeter wave range, the images are often acquired with poor resolution. In order to enhance these images and recover the spat...Show More
On the base of the analysis for passive millimeter wave (PMMW) detection, target’s radiation cross section was modeled as new token for target’s millimeter wave (MMW) characteristics. Target’s radiation cross section was then explained and analyzed for application; it was also analyzed for application on the base of actual testing. At last, the essence of PMMW stealth is target’s radiation cross s...Show More
We have recently extended the passive radar technique to permit interferometric observation of ionospheric irregularities. We discuss the implementation of a passive radar interferometer at VHF frequencies and show observations of field-aligned irregularities in the high-latitude E region ionosphere. The interferometer achieves very fine azimuthal resolution (as fine as 0.1°, or 2 km at a range of...Show More
Potential for imaging in passive multistatic radar systems is investigated primarily in terms of illuminator type and coherency. A typical set of transmitters in the UHF and VHF bands based upon the local illuminators in the Columbus, Ohio region is presented to constitute a realistic passive imaging environment. A passive radar signal model is then developed and demonstrates one possible processi...Show More
Airborne passive radar application: Interactions with space
2013 6th International Conference on Recent Advances in Space Technologies (RAST)
Year: 2013 | Conference Paper |
Cited by: Papers (4)
This paper introduces passive radar concept for airborne applications and explains the possible interactions with space. Passive radar is a challenging and popular topic in remote sensing. Passive radar concept has two main categories: Passive Emitter Tracking (PET) and Passive Coherent Locator (PCL). A new research area for passive radar concept is the application of this theory to airborne platf...Show More
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