Averaging Correlation for C/A Code Acquisition and Tracking in Frequency Domain
نویسنده
چکیده
This paper describes a new software method called “averaging correlation” to do block level GPS C/A code acquisition and tracking in frequency domain with smaller FFT blocks. The method retains the signal to noise ratio observed in more expensive correlators. Frequency domain software processing will become more feasible and popular if this method is implemented in civil GPS receivers.
منابع مشابه
Improving Long PN-Code Acquisition in the Presence of Doppler Frequency Shifts
Wireless communication is the major form of connection nowadays. In most cases it exploits the benefits of the spread spectrum techniques to overcome channel introduced corruptions like Doppler residual frequency, noise, interference and jamming. These techniques also enhance the security and quality of the link. Using long spreading pseudo-noise codes provides further security for the link tho...
متن کاملReduced-complexity Time-domain Correlation for Acquisition and Tracking of Boc-modulated Signals
Recent proposals for the modernized GPS and Galileo receivers suggested the use of a new modulation type, namely the Binary-Offset-Carrier (BOC) modulation, in order to get a better spectral efficiency and reduced interference compared to the traditional BPSK modulation. The acquisition and tracking of the code phase delay and Doppler shift is typically based on the correlation between the rece...
متن کاملRobust Synchronization of Weak GPS Signals in Multipath Environments Using A Block Averaging Processing and Maximum Likelihood Estimation
In this paper, we propose a robust approach for GPS synchronization in low signal-to-noise ratio (SNR) and multipath environments such as that encountered in indoor applications. Exploiting the replication property of the C/A code within each data bit, we develop a block averaging pre-processing (BAP) of coherent integration to improve the SNR by enhancing receiver robustness against noise and ...
متن کاملTime-Varying Frequency Fading Channel Tracking In OFDM-PLNC System, Using Kalman Filter
Physical-layer network coding (PLNC) has the ability to drastically improve the throughput of multi-source wireless communication systems. In this paper, we focus on the problem of channel tracking in a Decode-and-Forward (DF) OFDM PLNC system. We proposed a Kalman Filter-based algorithm for tracking the frequency/time fading channel in this system. Tracking of the channel is performed in the t...
متن کاملSatellite Signal Acquisition, Tracking, and Data Demodulation
In practice, a GPS receiver must first replicate the PRN code that is transmitted by the SV being acquired by the receiver; then it must shift the phase of the replica code until it correlates with the SV PRN code. When cross-correlating the transmitted PRN code with a replica code, the same correlation properties occur that occurs for the mathematical autocorrelation process for a given PRN co...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2001