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XE16BB10是基于先进的FirstGPS^TM体系机构的XE1610芯片组的一部分。XE16BB10增强型GPS信道相关器可用于接收和解码来自Colossus^TM射频集成电路的数字信号,将GPS测量值输出到“导航平台”,然后通过“导航平台”和这些测量值来计算位置、速度和/或时间,以便并行跟踪GPS L1(1.575GHz)频率信号。下面是XE16BB10的主要参数和特点: 相似文献
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《中国无线电电子学文摘》1995,(3)
TN967.l 9503]039电离层对普通GPS和位置差分GPS定位误差的影响/宋茂忠,王永澄(南京航空大学)11南京航空航天大学学报一1 994,26(6)一782一788 为了改进差分GPS的校正算法,本文在月平均电离层时延等值图的基础上,建立了一个简单而又逼真的电离层模型,并分析了普通GPS和位置差分GPS仅电离层单一因索引人的定位误差.图2表2参5(木)2(许)V448 95031040红外制导系统仿真技术的现状与发展/汪朝群(上海机电工程所)11航天控制一1994,(4)一28一31 文章以国内、外红外制导武器的发展为基础,论述了红外制导系统仿真技术的特点、现状和今后的发… 相似文献
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作为中国自主研制和建立的卫星导航系统,BDS的运行将从根本上解决长期依赖于GPS系统面临的风险问题.但在技术没完全成熟之前, BD2/GPS双模导航将是车载导航的发展趋势.文章提出了一种基于BD2/GPS的双模车载导航终端系统的设计方案,包括硬件系统和软件系统,并介绍了设计思路. 相似文献
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介绍了XEMICS公司的射频芯片XE1201,并基于该芯片设计并实现了点对多点的时分复用无线通信协议。给出了实现该通信系统的方案。 相似文献
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针对GPS在各领域的应用,主要介绍了基于GPS的信息系统的构建方法.该系统是由测控终端、通信系统和中心监控系统三个相互关联的部分组成,阐述了各组成部分的结构、功能,简要介绍了基于GPS信息系统的各个应用领域及现状,并指出基于GPS的信息系统是一个将全球定位系(GPS)、计算机技术、通信技术、数据库技术相结合的产物,已经成为跨学科、跨行业、广用途、高效益的综合性高新技术. 相似文献
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MAX2640/MAX2641电路是美国MAXIM公司推出不久的射频新产品,它是专为蜂窝电话、PCS、GPS、GSM移动通信系统以及2.4GHz ISM频段的前端应用而设计的.该电路在3V电源电压下的功耗电流小于3.5mA,工作频率范围为400MHz~2 500MHz,功率增益大于14dB,噪声系数小于1.3dB. 相似文献
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讨论了用航向、姿态测量装置实现靶船航向、姿态测量和用GPS接收机实现靶船定位、授时的方法,并互利用它们构建了硬件平台。最后,给出了系统总体设计框图,并对系统功能的实现和工作过程进行了详细介绍。 相似文献
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In this paper, an error compensation technique for a dead reckoning (DR) system using a magnetic compass module is proposed. The magnetic compass‐based azimuth may include a bias that varies with location due to the surrounding magnetic sources. In this paper, the DR system is integrated with a Global Positioning System (GPS) receiver using a finite impulse response (FIR) filter to reduce errors. This filter can estimate the varying bias more effectively than the conventional Kalman filter, which has an infinite impulse response structure. Moreover, the conventional receding horizon Kalman FIR (RHKF) filter is modified for application in nonlinear systems and to compensate the drawbacks of the RHKF filter. The modified RHKF filter is a novel RHKF filter scheme for nonlinear dynamics. The inverse covariance form of the linearized Kalman filter is combined with a receding horizon FIR strategy. This filter is then combined with an extended Kalman filter to enhance the convergence characteristics of the FIR filter. Also, the receding interval is extended to reduce the computational burden. The performance of the proposed DR/GPS integrated system using the modified RHKF filter is evaluated through simulation. 相似文献
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Rui Tao Zhi-Hao Yang Chao Tan Xin Hao Zun-Gui Ke Lei Yang Li-Ping Dai Xin-Wu Deng Ping-Jian Li Ze-Gao Wang 《电子科技学刊:英文版》2022,20(3):225-236
Magnetism in two-dimensional (2D) materials has attracted much attention recently. However, intrinsic magnetic 2D materials are rare and mostly unstable in ambient. Although heteroatom doping can introduce magnetism, the basic property especially the electrical-magnetic coupling property has been rarely revealed. Herein, both iron (Fe)-doped and vanadium (V)-doped MoS2 films were grown by chemical vapor deposition. Through studying the structure and electrical property of Fe-doped and V-doped MoS2, it was found that both Fe and V doping would decrease the electron concentration, exhibiting a p-type doping effect. Significantly, V-doped MoS2 displays a p-type conduction behavior. Although the carrier mobility decreases after heteroatom doping, both Fe and V doping could endow MoS2 with magnetism, in which the transfer curves of both MoS2 transistors exhibit a strong magnetic-dependent behavior. It is found that the magnetic response of Fe-doped MoS2 can be tuned from ~0.2 nA/T to ~1.3 nA/T, with the tunability much larger than that of V-doped MoS2. At last, the magnetic mechanism is discussed with the local magnetic property performed by magnetic force microscopy. The typical morphology-independent magnetic signal demonstrates the formed magnetic domain structure in Fe-doped MoS2. This study opens new potential to design novel magnetic-electrical devices. 相似文献
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This work demonstrates a dead‐reckoning (DR) scheme for a low‐cost land navigation system and a DR/GPS system design using the sigma point Kalman filter (SPKF). Through an observability analysis and some simulations, it is shown that the performances of a stand‐alone DR system and DR/GPS system can be improved by employing the proposed DR scheme and SPKF. By using the designed DR scheme and filter, the stand‐alone DR system does not have any undetectable errors occurring on the curve trajectory. And the DR/GPS system can provide a stable and seamless navigational solution even in the case where the initial heading estimation error is large, such as 160 degrees, or when the GPS signal is unavailable due to tunnels, buildings, and so on. Simulation results indicate a satisfactory performance of the proposed system. 相似文献
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介绍了使用有限元法分析磁路的原理和一般步骤,并结合具体的例子说明其在磁路分析的实用性.通过这一方法,并借助于当代高速计算机,可以省时省力地得出一个磁路的磁场分布或磁力线分布. 相似文献