Fast fourier transform with down sampling based navigational satellite signal tracking

摘要: A method and device to track navigational satellite signals, are claimed. In this invention, a combination of down-sampling frequency domain transformation used the signals under dynamic environment. Fast Fourier Transform (FFT) with long coherent integration has been employed determine varying components high resolution. By representing number correlation values their average value, it is possible represent sequence input by smaller relatively short length FFT can reveal low that present in signal during tracking operation. large reduction computational load may be achieved using without compromising on