The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
Pierre-alexandre Blanche - One of the best experts on this subject based on the ideXlab platform.
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Phase Retrieval in Tabletop Radar Range
Imaging and Applied Optics Congress, 2020Co-Authors: Pierre-alexandre Blanche, Remington S. Ketchum, Pedro Enrique AlcarazAbstract:We are describing the capability to measure the phase of the return signal in a tabletop Radar Range. The Radar rage has a scale factor of 100,000 which allows to use near IR wavelength instead of radio frequency. Accurate scale models are manufactured using multiphoton 3D printer with nanometric resolution. We demonstrated that using phase shifting interferometry, this Radar Range can retrieve the phase of the Radar cross section of complex objects similar to SAR or ISAR Radar systems.
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A 300 THz tabletop Radar Range system with sub-micron distance accuracy.
Scientific reports, 2018Co-Authors: Pierre-alexandre Blanche, Mark A. Neifeld, Mingguang Tuo, Hao Xin, Nasser PeyghambarianAbstract:We are presenting a compact Radar Range system with a scale factor of 105. Replacing the radio frequency (RF) by optical wavelength (300 THz), the system easily fit on a tabletop. We used interferometric time-of-flight to reproduce Radar ranging measurements. Sub-micron Range accuracy was achieved with a 100 fs laser pulse, which correspond to 3 cm for a s-band (3 GHz) Radar. We demonstrated the system potential on a simple target, and compared the results with radio frequency measurement using a vector network analyzer. We also present measurement with a more realistic model, a 3D printed reproduction of the USS Arizona battleship, for which a 3D model is extracted from the ranging data. Together with our previous demonstration of Radar cross section measurement with a similar system, this report further validates our proposal to use optics to simulate Radar properties of complex radio frequency systems.
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A 100,000 Scale Factor Radar Range
Scientific Reports, 2017Co-Authors: Pierre-alexandre Blanche, Mark NeifeldAbstract:The Radar cross section of an object is an important electromagnetic property that is often measured in anechoic chambers. However, for very large and complex structures such as ships or sea and land clutters, this common approach is not practical. The use of computer simulations is also not viable since it would take many years of computational time to model and predict the Radar characteristics of such large objects. We have now devised a new scaling technique to overcome these difficulties, and make accurate measurements of the Radar cross section of large items. In this article we demonstrate that by reducing the scale of the model by a factor 100,000, and using near infrared wavelength, the Radar cross section can be determined in a tabletop setup. The accuracy of the method is compared to simulations, and an example of measurement is provided on a 1 mm highly detailed model of a ship. The advantages of this scaling approach is its versatility, and the possibility to perform fast, convenient, and inexpensive measurements.
Nasser Peyghambarian - One of the best experts on this subject based on the ideXlab platform.
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A 300 THz tabletop Radar Range system with sub-micron distance accuracy.
Scientific reports, 2018Co-Authors: Pierre-alexandre Blanche, Mark A. Neifeld, Mingguang Tuo, Hao Xin, Nasser PeyghambarianAbstract:We are presenting a compact Radar Range system with a scale factor of 105. Replacing the radio frequency (RF) by optical wavelength (300 THz), the system easily fit on a tabletop. We used interferometric time-of-flight to reproduce Radar ranging measurements. Sub-micron Range accuracy was achieved with a 100 fs laser pulse, which correspond to 3 cm for a s-band (3 GHz) Radar. We demonstrated the system potential on a simple target, and compared the results with radio frequency measurement using a vector network analyzer. We also present measurement with a more realistic model, a 3D printed reproduction of the USS Arizona battleship, for which a 3D model is extracted from the ranging data. Together with our previous demonstration of Radar cross section measurement with a similar system, this report further validates our proposal to use optics to simulate Radar properties of complex radio frequency systems.
Mark Neifeld - One of the best experts on this subject based on the ideXlab platform.
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A 100,000 Scale Factor Radar Range
Scientific Reports, 2017Co-Authors: Pierre-alexandre Blanche, Mark NeifeldAbstract:The Radar cross section of an object is an important electromagnetic property that is often measured in anechoic chambers. However, for very large and complex structures such as ships or sea and land clutters, this common approach is not practical. The use of computer simulations is also not viable since it would take many years of computational time to model and predict the Radar characteristics of such large objects. We have now devised a new scaling technique to overcome these difficulties, and make accurate measurements of the Radar cross section of large items. In this article we demonstrate that by reducing the scale of the model by a factor 100,000, and using near infrared wavelength, the Radar cross section can be determined in a tabletop setup. The accuracy of the method is compared to simulations, and an example of measurement is provided on a 1 mm highly detailed model of a ship. The advantages of this scaling approach is its versatility, and the possibility to perform fast, convenient, and inexpensive measurements.
Hao Xin - One of the best experts on this subject based on the ideXlab platform.
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A 300 THz tabletop Radar Range system with sub-micron distance accuracy.
Scientific reports, 2018Co-Authors: Pierre-alexandre Blanche, Mark A. Neifeld, Mingguang Tuo, Hao Xin, Nasser PeyghambarianAbstract:We are presenting a compact Radar Range system with a scale factor of 105. Replacing the radio frequency (RF) by optical wavelength (300 THz), the system easily fit on a tabletop. We used interferometric time-of-flight to reproduce Radar ranging measurements. Sub-micron Range accuracy was achieved with a 100 fs laser pulse, which correspond to 3 cm for a s-band (3 GHz) Radar. We demonstrated the system potential on a simple target, and compared the results with radio frequency measurement using a vector network analyzer. We also present measurement with a more realistic model, a 3D printed reproduction of the USS Arizona battleship, for which a 3D model is extracted from the ranging data. Together with our previous demonstration of Radar cross section measurement with a similar system, this report further validates our proposal to use optics to simulate Radar properties of complex radio frequency systems.
Mingguang Tuo - One of the best experts on this subject based on the ideXlab platform.
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A 300 THz tabletop Radar Range system with sub-micron distance accuracy.
Scientific reports, 2018Co-Authors: Pierre-alexandre Blanche, Mark A. Neifeld, Mingguang Tuo, Hao Xin, Nasser PeyghambarianAbstract:We are presenting a compact Radar Range system with a scale factor of 105. Replacing the radio frequency (RF) by optical wavelength (300 THz), the system easily fit on a tabletop. We used interferometric time-of-flight to reproduce Radar ranging measurements. Sub-micron Range accuracy was achieved with a 100 fs laser pulse, which correspond to 3 cm for a s-band (3 GHz) Radar. We demonstrated the system potential on a simple target, and compared the results with radio frequency measurement using a vector network analyzer. We also present measurement with a more realistic model, a 3D printed reproduction of the USS Arizona battleship, for which a 3D model is extracted from the ranging data. Together with our previous demonstration of Radar cross section measurement with a similar system, this report further validates our proposal to use optics to simulate Radar properties of complex radio frequency systems.
