In order to verify the chaff jamming performance, according to the time-frequency distribution and statistical characteristics of chaff echo, this paper presents a modeling and simulation method of chaff echo based on its mechanism of generation, Also it presents a simulation study of chaff echo signal based on LFM signals. The simulation results indicate that the generated chaff echo of this m...

In Modern warfare scenario, thin conducting chaff fibers with very high aspect ratio are used as passive electronic countermeasure. Radar Cross Section (RCS) of chaff cloud is an important parameter deciding its performance as electronic countermeasure. The chaff cloud is a dynamic target as when it is dispensed, it blooms in the atmosphere depending upon the atmospheric conditions and the plat...

Chaff is one of the most widely used and effective expendable electronic attack (EA) devices. It is a form of volumetric radar clutter consisting of multiple metalized radar reflectors known as chaff fibers designed to confuse hostile radar operation. It is dispensed into the atmosphere to deny radar acquisition, generate false targets. To understand the dynamics of chaff cloud, a software has ...

Since enterohemorrhagic Escherichia coli O157, Salmonella, etc., sometimes contaminate animal feces and may cause infectious diseases to humans, it is important to remove pathogenic bacteria from domestic animal waste. For the purpose, we examined the antibacterial activity of chaff vinegar. We found that the chaff vinegar inhibited the growth of pathogenic bacteria immediately in vitro but not...

In this paper, we propose a cross-matching algorithm that can detect stepping-stone intrusion. The theoretical analysis of this algorithm shows that it can completely resist intruder’s time-jittering evasion. The results of the experiments and the simulation show that this algorithm can also resist intruders’ chaff-perturbation with chaff-rate up to 80%. Compared with A. Blum’s approach, which ...

conclusions it was shown that the removal efficiency of nitrate was directly proportional to the amount of chaff, temperature, and contact time but inversely to the ph. this study showed that nitrate removal by chaff is a promising technique. results the result of this study revealed that chaff as an absorbent could remove nitrate from solutions, and the efficiency of adsorption increased as co...

Chaff is a radar countermeasure used to interfere with ground detection or missile target by disrupting the radar. As essential in modern electronic warfare, chaff also essentially many military vehicles. A large amount of chaffs form thin and long wire contained cylindrical rectangular cartridge launched cloud disturb It virtually impossible examine analytically because it released at once int...

Harvest weed seed control (HWSC) methods destroy, remove, or concentrate seeds collected during harvest. Depending on the method of HWSC, chaff and straw fractions may also be destroyed, removed, concentrated. Observations at soybean (Glycine max (L.) Merr.) harvest in this study estimated distribution aboveground biomass between seed, straw, nutrient composition chaff. Measurements were combin...

Invasive species are a threat to every ecosystem. There is a strong incentive to predict which species will become invasive before they become too widespread and unmanageable. Different approaches have been advocated to assess invasive species potential. These include examining plant functional traits, quantifying competitive ability and phylogenetic comparison. In this study, we conducted expe...