Abstract: Scale shift of random texture due to perspective projection is available as the cue to estimate the expansion of almost horizontal space. To detect the image of possible routes as a version of maneuvering affordance, in this paper, two universal imaging rules, perspective projection and self-similarity, are combined. By identifying scale feature to invariant measure associated with a ...

The demand for high-performance underwater thrusters in marine engineering is increasing. concealed, mobile, and efficient ability of fish provides many directions research. black ghost knifefish uses only wavy ventral fins to swim can hover roll the water. Based on physiological morphological characteristics knifefish, we explored structure movement mode fin, so as establish a two-degree freed...

It is widely speculated that the adoption of a technology takes off to be self-sustaining if it reaches the critical mass. However, the sponsors of competing technologies may engage in strategic maneuvering in the adoption process. Indeed, this paper shows that in the de facto standardization process of the U.S. home VCR market, there was strategic maneuvering by the Betamax sponsor, which crea...

For maneuvering target tracking problem, interacting multiple model (IMM) algorithm performs better than single model algorithm, however, it also has some shortcomings. This study is devoted to propose a high accurate IMM algorithm. An improved IMM algorithm, named Switched IMM(S-IMM), is proposed. The S-IMM algorithm consists of two independent IMM filters with different model sets, CV(constan...

Tracking maneuvering targets in a radar system is more complicated because the target accelerations cannot be directly measured. It may occur severe tracking error even diverge the estimates when the maneuvering situations are happened. In this paper, we develop a Dual-Kalman filtering algorithm to handle the maneuvering targets’ tracking problems. In this approach, two collaborative Kalman fil...

Weak-signal and high-dynamics are of two primary concerns of space navigation using GNSS (Global Navigation Satellite System) in the space service volume (SSV). The paper firstly defines a reference assumption third-order phase-locked loop (PLL) as the baseline of an onboard GNSS receiver, and proves the incompetence of this conventional architecture. Then an adaptive four-state Kalman filter (...

In this paper, a novel rating based fuzzy analytic network process (F-ANP) model is proposed for the evaluation of ship maneuverability and the improvement of maneuverability standards. By incorporating the F-ANP technique into the American Bureau of Shipping (ABS) maneuverability standards, the proposed model is able to solve the problem of mutual dependencies of the maneuvering factors inhere...

The multiple maneuvering target tracking algorithm based on a particle filter is addressed. The equivalent-noise approach is adopted, which uses a simple dynamic model consisting of target state and equivalent noise which accounts for the combined effects of the process noise and maneuvers. The equivalent-noise approach converts the problem of maneuvering target tracking to that of state estima...

—This paper presents Current statistical model based Adaptive Unscented Kalman Filter (CAUKF) for maneuvering target tracking, which is based on Received Signal Strength Indication (RSSI). In order to introduce the Kalman filter, the state-space model, which uses RSSI values as the measurement equation, needs to be obtained. Thus a current statistical model for maneuvering target based on the ...