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With the emergence of mobile Internet, Internet of things and cloud computing, the domain of information security is in a rapid development. As a result, a constant stream of compound-words describing new concepts and new technologies has arisen. However, the existing dictionary does not collect those new compound-words in time, so it cannot identify them correctly. In order to solve this problem,...
MIL-STD-1553 is a data bus that served the needs of military system for over 35 years. Contemporary applications require much higher data rates than 1553's 1 megabit-per-second data rate. In this paper, a method for increasing the 1553's transmission speed in existing 1553 networks is explored and implemented. The method combines Discrete Multitone (DMT) modulation and 1553 network, and uses a new...
With the rapid development of modern avionics system, traditional MIL-STD-1553 bus cannot meet the requirements of high-speed communication. In this paper, a method of improving the transmission rate of the avionics bus is purposed by implementing a Discrete Multitone (DMT) interface over existing MIL-STD-1553 bus. Physical layer and analog front end (AFE) are designed and analyzed in detail. This...
Passive radar has recently received attention due to its advantages like low cost, covert operation, and difficulty of jamming. With cognition ability added in, passive radar's performance can improve for its adaptability to the environment. In this paper, multi-illuminator compatible cognitive passive radar, which aims at future complex electromagnetic environment and best potential illuminators...
The polygon orientation identification and point-in-polygon query algorithm for GIS polygon is in the course of improvement. Robust algorithms are presented in this paper. By comparing the serial number of polygon's four (or three, two) extreme points, the polygon's orientation can be identified, the main computation in the new algorithm is only integers' comparison. By finding the shortest point...
In this paper, an integrated farm information management system (IFIMS) is constructed through analyzing the mechanism and characteristics of component GIS. On the basis of the B/S architecture, a development pattern that integrated Microsoft .NET platform and the component SuperMap is applied to the system according to the requirements of farm production. The system is utilized for the integrated...
On the base of studying and analyzing the Globus Toolkit2.4 platform and remote sensing technology, this article uses the grid platform Globus Toolkit2.4 and the mode of parallel processing, develops a method of geometric correction for processing remote sensing images based on grid. It provides an approach for solving problems caused by RS imagepsilas characteristics of complexity and time consuming.
In existed rural communication conditions, voice service system would solve the problem which the rural users cannot obtain useful and real-time information. This paper gives a design of rural voice service system, and discusses the system structure and layer division. This system realizes functions of self-organization inquiry process and real-time conversion from text to speech by means of navigating...
On the base of studying and analyzing the Globus Toolkit2.4 platform and remote sensing technology, this article uses the grid platform Globus Toolkit2.4 and the Bayesian classification to build a remote sensing image process method of supervised classification under the grid environment. This method can provide a preferred approach for the classification of remote sensing image.
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