fourier造句
31. The trick is to use what is known as a "fast Fourier transform" to unpick more than 300 separate colours of light in a laser beam, each encoded with its own string of information.
32. A microscope image formation model based on scalar diffraction and Fourier optics has been developed, which takes a slant angle between the optical axis and the observed surface into account.
33. The Rang - Doppler imaging forms imagery through one dimension Fourier - transformed twice in Cartesian coordinate.
34. The content of Chinese herbs, medicine and medicament can be quantified without destruction by Diffused Reflection Fourier Transform and Near Infrared Spectroscopy (DR NIR FTIR).
35. D FFT ( Fast Fourier Transform ) transform code, compile and can operate normally.
36. The synthesized films were characterized by X - ray photoelectron spectroscopy and Fourier transform infrared spectroscopy.
37. An object image can be sampled first and then Fourier transformed by a computer, so that he complex amplitude and phase distribution can be encoded to form a computer-generated hologram (CGH).
38. DCT is based on FFT ( Fast Fourier Transform ), so integers FFT transform must be structured firstly.
39. The mathematical model of Fourier power spectrum is derived. The relations between the resolving power of the test chart and the critical maximum are defined through t...
40. This paper introduces an algorithm for calculating the Discrete Fourier Transform with continuous Fourier Transform of continuous signal. An example is given to verify this algorithm.
41. In the two-sublattice model, the Heisenberg exchange interaction Hamiltonian of the simple ferrimagnetic crystal can be made diagonalization by the use of HP, Fourier and Bogoliubov transformation.
42. Based on the theory of scalar diffraction and on the Fourier optics, a formula of the diffractive efficiency with alignment error for the 4 step Fresnel lens is obtained.
43. On the basis of the mathematical elastic theory, the bending deflection expression of the complex Fourier Series is derived at first for the infinite plate with a unit circle.
44. Fourier transform infra red ray spectrum (FT IR), differential scanning calorimeter(DSC) and cross link density were employed in the experiment, and the relation...
45. Comparing with Fourier full-cycle filtering method, it has more advantageous in restricting nonperiodic component.
46. The OTF (Optical Transfer Function) of an optical system can be evaluated by the Fourier Transform of the first derivative of the optical image of an knife-edge (object).
47. The Fourier coefficients have been numerically calculated for the typical objects, and by using optical filtering the objects are extracted from pictures.
48. The result indicates that fractional Fourier transform is the proper mathematic tools to Fresnel diffraction.
49. The Fourier amplitude spectrum used in a seismological model can be expressed as a product of source spectrum,[www.] propagation path factor and site effect in frequency domain.
50. The Short Time Fourier Transform (STFT) is utilized to estimate the power spectral density (PSD) of the tunneling-current signals and the data's feature vector was extracted in the frequency space.
51. The critical part of this sight is a holographic optical elements combined with a lensless Fourier transform hologram and a holographic beam transformer.
52. In this paper, a pulsar de - dispersion algorithm on Short Time Fourier Transform ( STFT ) is presented.
53. According to the established 3 D scene, we analyzed the convolution reconstruction method and Fourier reconstruction method.
54. Finally, the initial processing of 15 accelerograms, such as baseline correction and calculation of acceleration peaks, Fourier spectra and response spectra etc. , were done.
55. Fast Fourier Transform in C source code integrity, and can be used directly.
56. In this paper, separation variable method is applied to solve a Fourier solution for the Dirichlet question in circle of poisson equation.
57. By utilizing the character of dissymmetrical fractional fourier transform and combine the algorithm advantage of space domain and frequency domain, it presents a blind image watermarking algorithm.
58. This paper discusses the relation between Fourier series and wavelet transform.
59. But in essence, the short-time Fourier transformation is a method of ingle resolution because it uses an unchanged short-time widow function.
60. The discrete Fourier transform ( DFT ) and discrete Hartley transform ( DHT ) can be considered as special cases of DYT.
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