loading
Research on carrier tracking in Hybrid DS/FH spread spectrum TT&C system
2010 Edition, Volume 2, May 1, 2010 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Because of the effect of carrier frequency hopping, the input IF signal of carrier tracking loop in DS/FHSS (Direct Sequence/Frequency Hopping Spread Spectrum) TT&C (Telemetry, Tracking & Command) System is characterized...

Code tracking performance of DS/FH spread spectrum signal for TT&C
2010 Edition, April 1, 2010 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The theoretical expression is presented in this study to predict the early minus late power (EMLP) code tracking performance with residual frequency shift and finite front-end bandwidth. On basis of the expression and numerical simulation, the impact on the code tacking...

Effects of CW interference on carrier tracking
1994 Edition, January 1, 1994 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper focuses on the modeling and analysis of phase locked loops in the presence of CW interference such that the operating vulnerability to CW jamming and interference can be accessed. In the absence of noise the loop phase error signal is characterized analytically and...

Design of Baseband Signal Processing in TT&C System and Hardware Realization Based on DSSS/FHSS Technique
2010 Edition, Volume 1, October 1, 2010 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper describes the principle of TT&C system based on DS (Direct Sequence)/FH (Frequency Hopping) hybrid spread spectrum technique. An implementation scheme for its base band signal processing is designed. A fast acquisition scheme...

Research on effect of Cross-correlation on carrier tracking accuracy
2012 Edition, October 1, 2012 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Carrier tracking accuracy directly affected the quality assessment of the navigation signals. It's necessary to improve carrier tracking accuracy for effective navigation signal quality assessment. Cross-correlated interference between strong signal and weak signal and...

Frequency-Hopping Techniques for Secure Satellite TT&C: System Analysis & Trade-Offs
2006 Edition, September 1, 2006 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Near future on-board telemetry, tracking and command (TT&C) equipment for secure communications will likely adopt frequency hopping (FH) instead of direct sequence (DS) spread spectrum (SS) techniques. As far as TT&C...

Acquisition performance analysis of a synchronization scheme of DS/FH hybrid spread spectrum signals for TT&C
2009 Edition, August 1, 2009 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A synchronization scheme of DS/FH hybrid spread spectrum signals based on fast frequency identification is proposed, for high dynamic characteristic of signals in TT&C system. On basis of providing the mathematical model...

A research of carrier tracking loop for high hopping rate DS/FH receiver
2013 Edition, August 1, 2013 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

High hopping rate DS/FH (Direct Sequence/ Frequency Hopping) hybrid spread spectrum system has the advantages of both advanced anti-jamming capabilities and high security, which is one of the directions of the frequency hopping communication system...

Survey on Robust Carrier Tracking Techniques
2014 Edition, Volume 16, January 1, 2014 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

In most wired and wireless systems, carrier tracking is an essential task that allows the receiver to precisely synchronize with the carrier of the incoming signal. Stringent carrier tracking requirements are imposed in systems that are...

Study on Carrier Tracking Performance of DS/BPSK Navigation Receiver in the Multipath Environment
2008 Edition, October 1, 2008 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The carrier phase tracking performance in the presence of multipath component is researched in the paper for the DS/BPSK navigation receiver. The pseudonoise (PN) code tracking loop of the receiver adopts the noncoherent delay lock loop (DLL), and...

Advertisement