نتایج جستجو برای: magnetometer and sun sensor
تعداد نتایج: 16869846 فیلتر نتایج به سال:
The purpose of this paper is to attitude estimation of Nano-satellite which requires navigation sensors data to less cost function and effection movement of Nano-satellite focus of the research is to using data of navigation sensors and methods to achieve the requirement of the attitude estimation. in this paper the following attitude estimation of the according to direction of sun of the Nano-...
The TableSat single degree-of-freedom tabletop satellite platform was developed to support education and research activities in embedded software and control systems. This paper describes the TableSat system, actuated by a pair of computer fans as thrusters, and then focuses on the evolution of its software for sensor calibration and fault-tolerant control. Sensor systems include a three-axis m...
With the current increased widespread interest in the development and applications of micro/nanosatellites, it was found that we needed to design a small high accuracy satellite attitude determination system, because the star trackers widely used in large satellites are large and heavy, and therefore not suitable for installation on micro/nanosatellites. A Sun sensor + magnetometer is proven to...
wireless sensor networks (wsns) are one of the most interesting consequences of innovations in different areas of technology including wireless and mobile communications, networking, and sensor design. these networks are considered as a class of wireless networks which are constructed by a set of sensors. a large number of applications have been proposed for wsns. besides having numerous applic...
abstract venlafaxine, 1–[2–(dimethylamino)–1–(4–methoxyphenyl) ethyl]cyclohexanol hydrochloride is a novel non-tricyclic antidepressant. venlafaxine is a second generation antidepressant drug, has a neuropharmacologic profile distinct from that of existing antidepressants including tricyclic compounds, selective serotonin reuptake inhibitors and monoamine oxidase inhibitors. venlafaxine impart...
A batch filter has been designed to autonomously estimate the orbit of a LEO spacecraft using data only from a magnetometer and a sun sensor. The goal of this study has been to prove the feasibility of a proposed low-cost, moderate-accuracy autonomous orbit determination system. The system uses a batch filter to estimate the Keplerian orbital parameters, a drag parameter, magnetometer biases, a...
a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...
Sun-oriented attitude control is one of the most important modes for micro/nano satellites, which directly affects on-orbit energy acquisition. Therefore, it great importance to use simplest sensors and actuators reliable algorithm achieve sun-oriented control. A spin-stabilized method satellites using only magnetic proposed in this paper, progress divided into four phases: initial damping phas...
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