A synthetic aperture imaging ladar demonstrator with Ø300mm antenna and changeable footprint

A demonstrator of synthetic aperture imaging ladar (SAIL) is constructed with the maximum aperture Ø300mm of antenna telescope. This demonstrator can be set with a rectangular aperture to produce a rectangular footprint suitable for scanning format with a high resolution and a wide strip. Particularly, the demonstrator is designed not only for the farfield application but also for the verifying and testing in the near-field in the laboratory space. And a 90 degree optical hybrid is used to mitigate the external phase errors caused by turbulence and vibration along line of sight direction and the internal phase errors caused by local fiber delay line. This paper gives the details of the systematic design, and the progresses of the experiment at a target distance around 130m.

[1]  刘立人 Liu Liren.  Synthetic Aperture Laser Imaging Radar (I): Defocused and Phase-Biased Telescope for Reception Antenna , 2008 .

[2]  刘立人 Liu Liren.  Synthetic Aperture Ladar (III): Circulated Duplex Telescope , 2008 .

[3]  Walter F. Buell,et al.  Demonstration of synthetic aperture imaging ladar , 2005, SPIE Defense + Commercial Sensing.

[4]  T J Green,et al.  Synthetic-aperture-radar imaging with a solid-state laser. , 1995, Applied optics.

[5]  刘立人 Liu Liren.  Synthetic-Aperture Ladar (II): Spatial Phase Biased Telescope for Transmitting Antenna , 2008 .

[6]  H. S. Hutchins,et al.  A synthetic aperture at 10.6 microns , 1970 .

[7]  Robert Lange,et al.  Optical inter-satellite links based on homodyne BPSK modulation: heritage, status, and outlook , 2005, SPIE LASE.

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

[9]  Yu Zhou,et al.  A multi-purpose SAIL demonstrator design and its principle experimental verification , 2009, Optical Engineering + Applications.

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

[11]  刘立人 Liu Liren.  Synthetic Aperture Imaging Ladar(V): Imaging Resolution and Antenna Aperture Function , 2009 .

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

[13]  A. Siegman,et al.  The antenna properties of optical heterodyne receivers. , 1966, Applied optics.

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