Model of complex weighting coefficients of adaptive spatial filtering algorithm based on conjugate gradient method
Journal Title: Scholars Journal of Engineering and Technology - Year 2016, Vol 4, Issue 12
Abstract
In recent years, GPS, GLONASS and other global navigation satellite systems (Galileo, BeiDou, IRNSS, QZSS) are widely used in both civilian and military applications for navigation, positioning, distance measurement, missile guidance, time synchronization and other applications. However, GPS, GLONASS, Galileo etc. signals are very weak and easily fall under the influence of radio frequency interference. Suppression GPS, GLONASS, Galileo etc. signals can have different types, intentional or not intentional. The paper presents a comprehensive definition of the weighting coefficients of adaptive spatial filtering algorithm based on conjugate gradient method. A distinctive feature of this model is the use of quasi-Newton method for finding the minimum objective function – conjugate gradient method; it can significantly reduce the computational cost of the calculation, while ensuring a given level of noise suppression. The research of potential characteristics of the adaptive interference compensator while suppressing to three interferences showed that the adaptive compensator allows doing the noise suppression for amount of interferences with the level of no worse than 40 dB. Keywords: noise suppression, conjugate gradient, interference compensator, quasi-Newton method, spatial filtering, objective function, GPS, GLONASS, Galileo, BeiDou, IRNSS, QZSS.
Authors and Affiliations
Kostiantyn V. Herasymenko
Keywords
Related Articles
- EP ID EP385432
- DOI -
- Views 97
- Downloads 0
Color and odor removal from tannery waste water using natural coagulant and locally available commercial grade lime
Tannery industry is one of the large scaled industry which produces lot of organic wastes per day. Tannery effluents contain lot of hazardous elements which can affect human immunity when it is directly discharged in wat...
Global Solutions to Damped Fisher Equation by Renormalization Group Method Based on the Classical Theory of Envelope
By the Kunihiro's renormalization group method based on the classical theory of envelope, the global approximate solution to damped Fisher equation is obtained. Keywords: renormalization group; envelope theory; global ap...
Optimization of Injection Parameters of Polymer Flooding in X Block CLASS-ⅡReservoir
The type Ⅱ oil layers（it is also named thin and poor layers） in Block X is now in the later stage of high water cut with an average water content of 91.7%. In order to reduce the decline of production and improve the d...
Effect of Vegetative Cover on Urban Heat Island Effect
With rapid industrialization and the rise of concrete forests, the effects of climate change have now posed a major challenge to the scientific community. The absorbance of radiation on the surface has incremented over t...
Seismic Response of Buried Pipeline across the Fault for Two Kinds of Variable-Diameter
Abstract:Seismic damage showed that the effect of earthquake damages on urban lifeline system is much larger than other disasters. Shell element model of four nodes was used to simulate the buried pipeline, and the inter...