Ran Ren

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—In emitter geo-location estimation systems, it is well known that the geometry between sensors and the emitter can seriously impact the accuracy of the location estimate. Here we consider a case where a set of sensors is tasked to perform a sequence of location estimates on an emitter as the sensors progress throughout their trajectories. The goal is to(More)
—When trying to estimate the location of a non-cooperative non-coherent emitter using intercepted signal measurements from a single airborne platform, the doppler-based techniques, such as the Frequency of Arrival (FOA) is not applicable. In this paper, we propose a single platform long baseline interferometry (LBI) based emitter location estimator which(More)
This article introduces a new DNA sequence compression algorithm which is based on LUT and LZ77 algorithm. Combined a LUT-based pre-coding routine and LZ77 compression routine,this algorithm can approach a compression ratio 1 of 1.9bits /base and even lower.The biggest advantage of this algorithm is fast execution, small memory occupation and easy(More)
In this paper, we propose a fast 2-D block-based motion estimation algorithm called Particle Swarm Optimization Zero motion Prejudgment(PSO-ZMP) which consists of three sequential routines: 1)Zero-motion prejudgment. The routine aims at finding static macroblocks(MB) which do not need to perform remaining search thus reduces the computational cost;(More)
This article introduces a new DNA sequence compression algorithm which is based on looking-up table and LZ77 algorithm. Combined a looking-up-table based pre-coding routine and LZ77 compression routine,this algorithm can approach a compression degree of 2bits per base and even lower.The purpose of looking-up table is to code a sequence which consists of(More)
This article introduces a new DNA sequence compression algorithm which is based on look-up table and LZ77 algorithm. Combined a look-up-table-based pre-coding routine and LZ77 compression routine,this algorithm can approach a compression ratio 1 of 1.9bits /base and even lower.The biggest advantage of this algorithm is fast, small memory occupation and it(More)
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