Improvement of the signal-to-noise ratio in static-mode down-looking synthetic aperture imaging ladar

The static-mode down-looking synthetic aperture imaging ladar (SAIL) can keep the target and carrying-platform still during the collection process. Improvement of the signal-to-noise ratio in static-mode down-looking SAIL is investigated. The signal-to-noise ratio is improved by increasing scanning time and sampling rate in static-mode down-looking SAIL. In the experiment, the targets are reconstructed in different scanning time and different sampling rate. As the increasing of the scanning time and sampling rate, the reconstructed images become clearer. These techniques have a great potential for applications in extensive synthetic aperture imaging ladar fields.

[1]  周煜 Zhou Yu,et al.  Two-Dimensional Imaging Experiment of Down-Looking Synthetic Aperture Ladar under Simulated Far-Field Conditions , 2014 .

[2]  刘立人 Liu Liren.  Principle of Down-Looking Synthetic Aperture Imaging Ladar , 2012 .

[3]  Liren Liu,et al.  Laboratory demonstration of static-mode down-looking synthetic aperture imaging ladar , 2015 .

[4]  Mark Bashkansky,et al.  Synthetic Aperture Ladar (SAL): Fundamental Theory, Design Equations for a Satellite System, and Laboratory Demonstration , 2002 .

[5]  L. Rickard,et al.  Two-dimensional synthetic aperture imaging in the optical domain. , 2002, Optics letters.

[6]  周煜 Zhou Yu,et al.  A Large-Aperture Synthetic Aperture Imaging Ladar Demonstrator and Its Verification in Laboratory Space , 2011 .

[7]  Liren Liu.  Optical antenna of telescope for synthetic aperture ladar , 2008, Optical Engineering + Applications.

[8]  Yu Zhou,et al.  A synthetic aperture imaging ladar demonstrator with Ø300mm antenna and changeable footprint , 2010, Optical Engineering + Applications.

[9]  Liren Liu.  Coherent and incoherent synthetic-aperture imaging ladars and laboratory-space experimental demonstrations [Invited]. , 2013, Applied optics.

[10]  Stephen Crouch,et al.  Laboratory demonstrations of interferometric and spotlight synthetic aperture ladar techniques. , 2012, Optics express.

[11]  Steven M Beck,et al.  Synthetic-aperture imaging laser radar: laboratory demonstration and signal processing. , 2005, Applied optics.

[12]  Liren Liu,et al.  Laboratory demonstration of static-mode down-looking synthetic aperture imaging ladar , 2015 .

[13]  Liren Liu.  Antenna aperture and imaging resolution of synthetic aperture imaging ladar , 2009, Optical Engineering + Applications.

[14]  Z. Barber,et al.  Synthetic aperture ladar imaging demonstrations and information at very low return levels. , 2014, Applied optics.

[15]  周煜,et al.  Down-looking synthetic aperture imaging ladar demonstrator and its experiments over 1.2 km outdoor , 2014 .

[16]  Joe Buck,et al.  Synthetic aperture ladar flight demonstration , 2011, CLEO: 2011 - Laser Science to Photonic Applications.