The paper tackles the problem of real-time image motion tracking as a baseline function for visual motion estimation. Motion tracking is performed using the principles of 2D area correlation and joint transform correlation. To cope with real-time requirements a compact embedded optical Joint Transform Correlator design is presented, which allows using image motion tracking in mobile application...

Control of a class of uncertain nonlinear systems, which estimates unavailable state variables, is considered. A new approach for robust tracking control problem of satellite for large rotational maneuvers is presented in this paper. The features of this approach include a strong algorithm to estimate attitude, based on discrete extended Kalman filter combined with a continuous extended Kalman ...

In this paper a result on attitude tracking control of a micro satellite by integrator backstepping based on quaternion feedback is presented, and the controller is shown to render the system equilibrium point UGAS by application of the LaSalle-Yoshizawa theorem. This is a part of a study of possible control methods for the spacecraft ESEO, a spacecraft included in the SSETI project initiated b...

Both the correlation methods and cell-identification methods currently used to identify and track individual storms in remotely sensed weather images have drawbacks. A hybrid method is introduced wherein we use a segmentation-based approach to identify storms in images and arrange the identified storms heirarchially. A genetic-algorithm method of matching these segmented regions across frames i...

Abstract-Current techniques for cyclone detectionCurrent techniques for cyclone detection and tracking employ NCEP (National Centers for Environmental Prediction) models from in-situ measurements. This solution does not provide global coverage, unlike remote satellite observations. However it is impractical to use a single Earth orbiting satellite to detect and track events such as cyclones in ...

—Under high dynamic and weak signal environment in the satellite Tracking, Telemetry and Command (TT&C) systems, the carrier acquisition and tracking can’t be easily achieved. In this paper, an improved two-stage high dynamic and weak signal carrier acquisition and tracking are presented for perfect carrier synchronization. The typical U.S. Jet Propulsion Laboratory (JPL) high dynamic carrier ...

Tropical cyclones spend most of their life cycle over the tropical and subtropical oceans. Because of the lack of in situ data in these regions, satellite observations are fundamental for tracking and estimating the intensity of these storms for real-time forecasting and monitoring climate trends. This chapter reviews methods for estimating tropical cyclone intensity from satellites, including ...

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...

A Slotted microstrip patch antenna for Ku band is designed and thoroughly simulated in this paper. The designed antenna is worked at Resonant frequency of 14.25 GHz in Ku band and that can be used in Satellite Communication for Satellite Tv, DBS services,satellite tracking etc. It is shown that the simulated results are in acceptable agreement. More importantly, it is also shown that the micros...

This paper describes the main characteristics and architecture of a satellite mobile internet access (MSIA) system developed by ETRI. MSIA system provides Internet service, broadcasting, and digital A/V service in both fixed and mobile environments using Ku-band geostationary earth orbit (GEO) satellite. A Ku -band two-way active phased array antenna installed on top of the transportation vehic...