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Direct-looking synthetic aperture laser imaging radar reflective double-sided translation launcher

A synthetic aperture laser and imaging radar technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of not proposing a schematic diagram of the principle structure, and achieve the effects of easy implementation, simplified experimental structure, and reduced lens aberration

Active Publication Date: 2015-08-12
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

The composite phase difference of the two polarized wavefronts is a parabolic equipotential distribution, but no specific schematic diagram of the principle structure is proposed

Method used

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  • Direct-looking synthetic aperture laser imaging radar reflective double-sided translation launcher
  • Direct-looking synthetic aperture laser imaging radar reflective double-sided translation launcher
  • Direct-looking synthetic aperture laser imaging radar reflective double-sided translation launcher

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0022] see first figure 1 , figure 1 It is a structural schematic diagram of the direct-looking synthetic aperture laser imaging radar reflective double-sided translation transmitter of the present invention. As can be seen from the figure, the direct-looking synthetic aperture laser imaging radar reflective double-sided translation transmitting device of the present invention includes a laser light source 1, a polarizing beam splitter 2, a first quarter-wave plate 3, and a second quarter-wave Sheet 4, vertically polarized light path astigmatic cylindrical concave-convex reflector 5, horizontally polarized light path spherical reflector 6 and transmitting telescope main mirror 7, the positional relationship of the above-mentioned components is as follows:

[002...

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Abstract

Provided is a reflecting type double-faced translating transmitting device for a direct-view synthetic aperture laser imaging radar. The transmitting device comprises a laser light source, a transmitting polarization beam splitter, a quarter wave plate, a horizontal polarized light-path spherical reflector, a vertical polarized light-path cylindrical concave-convex reflector and a transmitting telescope primary mirror. The reflecting type double-faced translating transmitting device comprises a few optical components, is simple and compact in structure, reliable in principle, easy to achieve and free of optical delay line, can meet the requirements for real-time synchronous change of optical phases and meets the requirements of the transmitting end of the direct-view synthetic aperture laser imaging radar.

Description

technical field [0001] The invention relates to laser radar signal emission, in particular to a direct-looking synthetic aperture laser imaging radar reflective double-sided translational emission device. The device is based on the principle of coaxial scanning astigmatic wavefront emission. At the transmitting end, through the translation of two mirrors, the coaxial concentric double beam polarized orthogonal beam is emitted, and the scanning speed on the far field receiving surface is equal. Background technique [0002] The synthetic aperture laser imaging radar described in the prior art [1] (Two-dimensional synthetic aperture imaging in the optical domain [J]. Opt. Lett., 2002, 27(22): 1983-1985) can The only optical imaging observation method that can obtain centimeter-level imaging resolution from a distance. It regards the side as the necessary working condition, and implements range-wise (cross-track direction) distance resolution imaging, that is, Fourier transfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/481
Inventor 马小平孙建锋职亚楠周煜卢智勇许倩刘立人
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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