speckle technique
3.In this paper first according to digital speckle correlation method combining sub-pixel seeking technique and double linear inserting value arithmetic tensile test on fibre-glass beehive structure with core is accomplished to test the mechanics properties, and obtain experiment result in reason, and analyse synchronously error factor.
4.The system operates on pulse limited mode, transmitting pulses are FM Chirp pulses, the returned signal is processed in receiver in frequency domain instead of time domain by adopting “Full De ramp” technique and frequency spectrum analysis method. Adaptive tracker can remove about 75% of the noise power. High pulse repetition rate results in maximum effective number of independent pulses and are best effective in eliminating ocean surface backscatter speckle noise.
