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AUTOMATIC REGISTRATION OF GF4 PMS: A HIGH RESOLUTION MULTI-SPECTRAL SENSOR ON BOARD A SATELLITE ON GEOSTATIONARY ORBIT
GF4 PMS Automatic Image Registration Optimal Base Band RPC Correction Spatial Resolution
2018/5/14
Geometric correction is an important preprocessing process in the application of GF4 PMS image. The method of geometric correction that is based on the manual selection of geometric control points is ...
Microchannelled Chirped Fibre Bragg Grating Based Refractive Index Sensor Formed by Femto-Second Laser Processing and HF-etching
Chirped Fibre Bragg Grating Refractive Index Sensor Formed Femto-Second Laser Processing HF-etching
2015/8/3
The microchannelled chirped fibre Bragg grating (MCFBG) was fabricated using femtosecond laser processing and HF-etching. Intrinsical refractive-index sensitivity induced by the microchannel makes MCF...
Optical Pulse Coding Applied to Distributed Temperature Sensor Using Coherent Detection of Spontaneous Brillouin Frequency Shift
Optical Pulse Coding Applied Distributed Temperature Sensor Spontaneous Brillouin Frequency Shift
2015/8/3
A 53-km Simplex-coded distributed temperature sensor based on coherent detection of Brillouin frequency shift is demonstrated with 1.1 K and 35 m resolutions, using only 10 mW input peak power.
Spatially filtered wave-front sensor for high-order adaptive optics
FFT Shack–Hartmann-based reconstructors
2011/4/20
Wave-front reconstruction with the use of the fast Fourier transform (FFT) and spatial filtering is shown to be computationally tractable and sufficiently accurate for use in large Shack–Hartmann-base...