Title :
Instantaneous Frequency, Azimuth and Amplitude Measurement Based on Circle Array
Author :
Liu, Zhiqiang ; Ma, Hongguang ; Yang, Lifeng ; Wu, Xuemei
Author_Institution :
Xi´´an Res. Inst. of High-tech
Abstract :
A novel method of measuring instantaneous frequency, azimuth and amplitude based on circle array is proposed. It is not limited by indeterminancy principle, and realizes truly instantaneous frequency azimuth and amplitude measurement. In this method, amplitude is estimated using the association between array elements received signals with reference signal; frequency and azimuth are estimated dexterously by FFT, because circle array is essentially periodic. Simulation results show that instantaneous frequency, azimuth and amplitude can be estimated accurately in very short time, and this method is effective
Keywords :
array signal processing; fast Fourier transforms; FFT; amplitude measurement; array elements received signals; circle array; instantaneous frequency azimuth; reference signal; Amplitude estimation; Art; Azimuth; Difference equations; Frequency estimation; Frequency measurement; Phase detection; Phase estimation; Phase frequency detector; Sampling methods;
Conference_Titel :
Signal Processing, 2006 8th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9736-3
Electronic_ISBN :
0-7803-9736-3
DOI :
10.1109/ICOSP.2006.344454
