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The problem of estimating 3D velocity for slowly moving target in synthetic aperture radar (SAR) images is addressed. To solve this task, a new scheme based on multi-static SAR is presented. The developed scheme first estimates all values of the Doppler centroid and Doppler frequency rate in multi-static SAR by fractional Fourier transform method. Then, a Doppler frequency rate is used to estimate...
The dependence of the transmission spectrum of an optical microfibre coupler at high temperatures is investigated experimentally. Results show a temperature sensitivity up to 36.59 pm/°C at a taper waist outer diameter of 2.5 μm. Such a temperature-dependent performance can be utilised for temperature sensing up to 10008C.
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