Near Midair Collision Analog for Drones Based on Unmitigated Collision Risk

A Modified Midcourse Guidance Law Based on Genelarized Collision Course

Density Based Approach for Collision Risk Computation

Abstract: In February 2015 the satellite DMSP-F13 exploded in orbit producing 160 new trackable pieces of space debris. In the following days, operators assessed how the explosion affects the risk for their spacecraft, considering only debris objects larger than 10 cm. However, also smaller fragments are an important part of the debris population as any collision with objects larger than 1 mm m...

Near Collision Side Channel Attacks

Side channel collision attacks are a powerful method to exploit side channel leakage. Otherwise than a few exceptions, collision attacks usually combine leakage from distinct points in time, making them inherently bivariate. This work introduces the notion of near collisions to exploit the fact that values depending on the same sub-key can have similar while not identical leakage. We show how s...

3D Collision-Free Motion Based on Collision Index

A collision-free motion planning method for mobile robots moving in three-dimensional workspace is proposed in this article. To simplify the mathematical representation and reduce the computation complexity for collision detection, objects in the workspace are modeled as ellipsoids. By means of applying a series of coordinate and scaling transformations between the robot and the obstacles in th...

Near-Collision Attack and Collision-Attack on Double Block Length Compression Functions based on the Block Cipher IDEA

IDEA is a block cipher designed by Xuejia Lai and James L. Massey and was first described in 1991. IDEA does not vary the constant in its key schedule. In [1], Donghoon Chang and Moti Yung showed that there may be a weakness of hash function based on block cipher whose key schedule does not use various constants. Based on their result, we investigate the security of double block length compress...