An UKF Scheme for GPS Signal Tracking
نویسنده
چکیده
Under high dynamic situation, the typical GPS carrier tracking loop cannot guarantee a reliable tracking. In this paper an improved high dynamic carrier tracking method based on unscented Kalman filter is presented, a rapid frequency traction method is adopted to ensure that the filter can convergence quickly, and joining a carrier amplitude estimation method. The U.S Jet Propulsion Laboratory high dynamic carrier model is used to test the loop tracking performance, the test results show that the method can not only pull-in and lock the carrier signal quickly in a high dynamic environment, but under the jerk of up to 100g/s which also have a continuous and precise tracking performance.. Keywords—High dynamic, GPS, Unscented Kalman Filter, Carrier tracking
منابع مشابه
Design of a General Single Frequency GPS Receiver Research Platform for High Dynamic and Weak Signal
This paper demonstrates a GPS receiver research platform. It can generate digital Immediate Frequency (IF) GPS signal and some signal synchronize functions on high dynamic and weak signal environment. It is based on a mathematical signal model which expresses the digitized IF GPS signal as a function of various errors during propagation. The simulator is able to simulate more than 12 GPS satell...
متن کاملGPS Interference Mitigation Using Derivative-free Kalman Filter-based RNN
The global positioning system (GPS) with accurate positioning and timing properties has become integral part of all applications around the world. Radio frequency interference can significantly decrease the performance of GPS receivers or even completely prohibit the acquisition or tracking of satellites. The approaches of system performances that can be further enhanced by preprocessing to rej...
متن کاملComputationally Efficient Unscented Kalman Filtering Techniques for Launch Vehicle Navigation using a Space-borne GPS Receiver
The Extended Kalman Filter (EKF) is a well established technique for position and velocity estimation. However, the performance of the EKF degrades considerably in highly non-linear system applications as it requires local linearisation in its prediction stage. The Unscented Kalman Filter (UKF) was developed to address the non-linearity in the system by deterministic sampling. The UKF provides ...
متن کاملEstimation of LOS Rates for Target Tracking Problems using EKF and UKF Algorithms- a Comparative Study
One of the most important problem in target tracking is Line Of Sight (LOS) rate estimation for using from PN (proportional navigation) guidance law. This paper deals on estimation of position and LOS rates of target with respect to the pursuer from available noisy RF seeker and tracker measurements. Due to many important for exact estimation on tracking problems must target position and Line O...
متن کاملHybrid Fuzzy Reference Signal Tracking Control of a Doubly Fed Induction Generator
This paper presents a hybrid scheme for the control of active and reactive powers using the direct vector control with stator flux orientation (SFO) of the DFIG. The hybrid scheme consists of Fuzzy logic, Reference Signal Tracking (F-RST) controllers. The proposed (F-RST) controller is compared with the classical Proportional-Integral (PI) and the Polynomial (RST) based on the pole placement th...
متن کامل