In order to solve the problems of backward search and rescue methods, low search and rescue efficiency and practical application requirements, this paper designed a kind of solar-blind ultraviolet search and rescue equipment, a portable and practical ultraviolet LED beacon source. These constitute the solar-blind ultraviolet search and rescue system which can be applied to different scenes. In addition, an adaptive filtering algorithm based on motion compensation and photon statistics is proposed to process the ultraviolet image in the case of high noise and obvious jitter. A large number of application test results show that the system designed in this paper can carry out efficient search and rescue.
In order to meet the remote sensing application requirements for high spatial resolution, hyperspectral resolution and wide swatch, the next generation spaceborne high-resolution hyperspectral imager is put forward. The spatial resolution is 15m, the swatch is 90km and the hyperspectral resolution can be better than 5nm and 10nm in the spectral range 0.4μm~1.0μm and 1.0μm~2.5μm respectively. The index parameters are optimized depending on SNR and MTF. Then the telescope optical system and spectral imaging optical system are designed owing to the optical technical parameters. A new reimaging off-axis multi-mirror anastigmatic configuration is adopted and the freeform surface is used on the off-axis mirror to realize the telecentric design with wide field of view and large relative aperture. The results show that the distortion is lower than 0.44%. The Offner configuration is applied in the spectral imaging optical system and off-axis lens are used to deduce the length and obtain higher imaging performance. The keystone and smile both can be controlled within 1/10 pixel. The optical system of spaceborne high-resolution hyperspectral imager has so favorable imaging quality and compact volume that can satisfy the demand of multiple application areas.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.