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1. The image rotation was realized by FFT.
2. Secondly, the A/D conversion and the FFT of the Loran-C impulse signal areresearched.
3. One method is phase difference correction of partly FFT; the other is FFT frequency correction with quadratic interpolation.
4. The method adopts FFT instead of the cyclic frequency scanning. The analysis of the calculation amount shows that the new method is faster than the basic one. Simulation results validate the method.
5. The magnetic field sensitivity data are obtained by recording the response of the magnetometer for about 40s, performing a fast Fourier transform (FFT).
6. But the algorithm based on traditional FFT can cause range precision and velocity precision decreased, because of the inherent frequency space of FFT.
7. Comparing with existing prime factor FFT algorithms,(http://sentencedict.com/FFT.html) this algorithm saves about half of the storage and possesses a higher efficiency.
8. The range and Doppler information are included in the beat frequency of the linear frequency modulated continuous wave radar, and can be obtained by an two-dimensional fast Fourier transform (FFT).
9. D FFT ( Fast Fourier Transform ) transform code, compile and can operate normally.
10. FFT is a mathematical tool commonly used in digital signal processing, and is characterized by fast operational speed and low SNR threshold value.
11. The FFT algorithm is used in space signal processing and the rapid DoA estimation algorithms are studied, then a rapid MUSIC algorithm based on space partition is proposed.
12. A new method to estimate the FFT block timing offset in the MCCDMA system is proposed. Consecutive training sequences are used to acquire the initial time synchronization.
13. Employing the Fast Fourier Transform Algorithm (FFT) to determine the initial tap coefficients of equalizers is fundamentally different from using the current iteration method.
14. DCT is based on FFT ( Fast Fourier Transform ), so integers FFT transform must be structured firstly.
15. This paper discusses the parallel FFT algorithm on the hypercube architecture. Based on the analysis of the communication complexity, the speedup of the algorithm is derived.
16. In software algorithm, the Blackman window on FFT algorithm is used on the data processed. The precision of system is enhanced greatly especially in the power factor measurement.
17. For rectangular window FFT interpolation algorithm, the negative frequency components of harmonic components have a greater impact on the fundamental calculation error.
18. It contains four main modules: signal producing and simulating, FFT, digital filter and basic mathematical operation.
19. Furthermore, single butterfly processing element is employed to control FFT processor scale.
20. So the paper presents a scale-FFT magnitude method to separate integer and non-integer harmonics combining FFT with CWT.
21. The paper also advanced the method to achieve the convolution through FFT in digital filters and gave the improved formula to achieve FFT as well as the detailed programming steps.
22. By analysis of general real Fast Fourier Transform(FFT)algorithm, an improved real FFT algorithm is presented based on Graphic Processing Unit(GPU).
23. The Fast Fourier Transform Algorithm is an important signal analysis method, and FFT application in the earth resistance tester can improve its anti-interference ability.
24. Starting from an index mapping for one to multi-dimensions, a general in-place and in-order prime factor FFT algorithm is proposed.
25. A new method, which the ultra low frequency dielectric spectroscopy can be obtained by the absorption current with FFT, was established.
26. There are no especial advantage and distinctness by using the modern spectrum analysis method or FFT to study balance the specific value VLF/HF between the healthy individuals and hyperthyroid.
27. On account of the developed multiprocessor with multiport memory, this paper presents the detailed methods to implement FFT on the machine.
28. To reduce the time of GPS first location. it develop GPS sign's fast-acquisition based on the FFT, which Realize the carrier wave parallel processing and the code serial processing.
29. This article presents a digital type electromagnetic radiation measurement system along with its schematic circuit diagram, high speed discrete data sampling method and FFT calculation methods.
30. The basic motion equations are simplified by perturbation method. The equations are computed by FFT numerical method with actual orography of Qinghai-Xizang Plateau and Rocky Mountains.
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