The positioning, navigation, and timing (PNT) information is fundamental to modern information systems. Over the years, people have invented many navigation systems to get PNT information, whereas ...

Abstract: This paper addresses the critical issues of correlation loss and scalloping loss in traditional PMF-FFT algorithm for spread spectrum signal acquisition. An optimized method combining window ...

Consider $A$ and $B$; they are arrays, and $P$ is an array of the same length as $B$. For any $0\leq k < \text{len}(A)$, we want to efficiently calculate: $$ \text ...

Abstract: The polar coordinate system fast time-domain algorithm is more efficient than the original back-projection (BP) algorithm. However, it still has complex coordinate transformation and 2-D ...

Dec. 26, 2025 A new microchip-sized device could dramatically accelerate the future of quantum computing. It controls laser frequencies with extreme precision while using far less power than today’s ...