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In order to control its attitude, there usually have wings or other structures on the midcourse target. It is the foundation to simulate the radar echo of this kind of rotationally asymmetric target to get it recognized correctly. Firstly, the position variation of each scattering center on both the body and the wing is analyzed. After that, according to the high frequency method and local field theory,...
Mining provides a wealth of mineral raw materials to human beings, while also causes serious damage to environment and ecology. For decades, landscape renovation in mining wastelands has become a multi-disciplinary research focus. However, compared with the developed countries, China has disadvantages of the relevant theoretical researches developing slowly with lacking supporting technology. According...
A method to estimate the line of sight(LOS) rate of strapdown imaging seeker based on Particle Filter(PF) is presented. PF algorithm is firstly put forward and then the model of strapdown imaging seeker is introduced. Because of the high nonlinearity in both process and measurement equations and more seriously nonGaussian noise in the measurements, the normally used Extended Kalman Filter(EKF) can...
In order to solve the difficulties existed in current communication equipment simulative training, such as distributive interaction, real-time simulation, cable modeling and operation evaluating, four approaches were proposed in the paper. Firstly, a simulative training architecture based on HLA was proposed, with this architecture the distributive interaction were well solved. Secondly, many methods...
To overcome the low efficiency of phosphorus removal in the continuous influent biofilm, the continuous influent biofilm reactor (CIBFR) which based on intermittent aeration, rich phosphorus wastewater return and commutative influent was proposed in this study. The effects of dissolved oxygen(DO), volume loading (Nv) and the intermittent aeration on phosphorus removal of the CIBFR were investigated...
The oriental migratory locust plagues has became a serious problem during the last two decades. Remote sensing techniques can greatly facilitate monitoring locust population dynamics over a large geographic scale. In this paper, a model is presented to estimate leaf area index (LAI) of reed canopy from TM or ETM+ image data firstly. The model classifies the background of reed canopy into soil and...
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