In this paper, the stable region for missile guidance loop employing an integrated proportional navigation guidance law is derived. The missile guidance loop is formulated as a closed-loop control system consisting of a linear time-invariant feed-forward block and a time-varying feedback gain. By applying the circle criterion to the system, a bound for the time of flight up to which stability c...

In this paper, a mechanism is designed for integration of inertial navigation system information (INS) and global positioning system information (GPS). In this type of system a series of mathematical and filtering algorithms with Tightly Coupled techniques with several objectives such as application of integrated navigation algorithms, precise calculation of flying object position, speed and at...

Because, among other seismological observations, it is important to be able to predict the location of the vibrating pattern of an earthquake, in this chapter we take the first tentative steps towards including "Bryan’s effect" in a mathematical model for the seismic vibration pattern of a layered slowly rotating vibrating planet or moon. Historically, G.H. Bryan observed (in his article (Bryan...

accuracy of inertial navigation system (ins) is limited by inertial sensors imperfections. before using inertial sensors signals in the data fusion algorithm, noise removal method should be performed, in which, wavelet decomposition method is used. in this method the raw data is decomposed into high and low frequency data sets. in this study, wavelet multi-level resolution analysis (wmra) techn...

this study assessed domestic customers' attitude for website usability and attractiveness in iran petrochemical commercial company (ipcc) in business to business (b2b) market space . a three-phase conceptual scheme for website evaluation is examined based on constructs such as attractiveness, navigation and transaction. a website with aesthetics appeal can help initial attraction, communic...

Abstract Difference methods have been routinely used to compute velocity and acceleration from precise positioning with global navigation satellite systems (GNSS). A low sampling rate (say a not greater than 1 Hz, for example) has always implicitly assumed applicability of the methods, because random measurement errors are significantly amplified, either proportional in case or square-proportio...