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敏感器
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  sensor
     A Circuit System of Star Sensor Based on TMS320C6701
     基于TMS320C6701的星敏感器电路系统的设计
短句来源
     Design on Driving Circuit Based on FPGA Technology for CMOS Image Sensor
     基于FPGA的CMOS图像敏感器驱动电路设计
短句来源
     The Application of CMOS ROI for APS Star Sensor
     CMOS ROI技术在星敏感器上的应用
短句来源
     Design on Driving Schedules Based on CPLD Technology for CCD Image Sensor
     基于CPLD的CCD图像敏感器驱动时序设计
短句来源
     OPTICAL DESIGN OF CCD STAR SENSOR
     CCD星敏感器光学系统设计
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  start sensor
     Star pattern recognition is the key technic of satellite position confirmation from start sensor.
     星图识别则是星敏感器确定空间飞行器姿态的关键技术。
短句来源
     We take photos of the stars by CMOS start sensor, then campare star pattern with the online star database by star pattern recognition algorithms, gain recognition of bright stars in star pattern, then get the attitude of spacecraft.
     通过CMOS星敏感器摄取星空图像,利用星图识别算法与在线星库进行比较,获得对星图中亮星的识别,从而计算出空间飞行器的姿态。
短句来源
     Star pattern recognition is the key problem of satellite position determination from start sensor.
     星图识别是星敏感器确定卫星姿态的关键技术。
短句来源
  “敏感器”译为未确定词的双语例句
     Experimental results indicate that the angle estimation accuracy is less than 0.16° within the field of view of ±10°.
     实验结果表明太阳敏感器的角度估算精度在±10°视场角内为0.16°。
短句来源
     Application of CMOS APS in Star Tracker
     CMOS APS器件及其在星敏感器中的应用
短句来源
     Developments and Applications of CCD Sun-Sensor
     航天CCD太阳敏感器的发展与应用
短句来源
     Simulation of GPS Receiver Used in Fuze Based on SystemView
     基于SystemView的引信用GPS弹道敏感器仿真
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     Study on detection sensitivity of APS star tracker
     APS星敏感器探测灵敏度研究
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  sensor
A sensitive nicotine sensor based on molecularly imprinted electropolymer of o-aminophenol
      
A sensitive nicotine sensor based on a molecularly imprinted electropolymer of o-aminophenol is proposed and its configuration and performance are studied in detail.
      
The sensor exhibits good selectivity and sensitivity to nicotine.
      
The sensor has also been applied to the analysis of nicotine in tobacco samples with recovery rates ranging from 99.0% to 102%.
      
This sensor shows sensitive determination of choline with a linear range from 5.0 × 10-6 to 1.0 × 10-4 mol/L when the operating pH and potential are 7.2 and 0.15 V, respectively.
      
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This paper consist of three parts, in the first part a mathematical model is introduced for the hydrodynamic gas-supported free-rotor gyro. The next part discussed some constraint condition for design torque-rebalance pulse width modulated servo system. The last part present the analysis of coupling effect and decoupling design on the torque rebalance loop. Since exist the trailing torque and anti-spring torque for hydrodynamic gas-supported free-rotor gyro with variable clearance torque device, so that the...

This paper consist of three parts, in the first part a mathematical model is introduced for the hydrodynamic gas-supported free-rotor gyro. The next part discussed some constraint condition for design torque-rebalance pulse width modulated servo system. The last part present the analysis of coupling effect and decoupling design on the torque rebalance loop. Since exist the trailing torque and anti-spring torque for hydrodynamic gas-supported free-rotor gyro with variable clearance torque device, so that the model different from normal model of general gyro. Therefore the design of the torque rebalance loop also different from general loop. When this gyro used as angle sensor the coupling between one loop and another is important. This paper present a simple method for deeoupling design.

本文由三个部分组成:第一部分介绍动压气浮自由转子陀螺仪的数学模型;第二部分讨论设计力矩再平衡脉冲调宽伺服系统中的某些限制条件;最后部分讨论力矩再平衡回路中的耦合影响分析和去耦设计。由于在采用变间隙力矩器时的动压气浮自由转子陀螺仪中存在着跟踪力矩和反弹性力矩,使其模型与通常的理想陀螺模型有差别,因而在设计力矩再平衡回路时也有不同。该陀螺仪作为角度敏感器应用时,两个回路之间的耦合是重要的,本文提出一种简单的去耦设计方法。

This paper is concerned with the sequential control principle of an active acquisition system of gravity-gradient stabilized satellite with minimum hardware. In this system yaw sensors are not used and the velocity damping is realized effectively by using Logical circuits to process infrared horizon sensor's information, therefore, the expensive feedback packages are saved. Computation results show that this kind of control system is very powerful in adapting to launch vehicle and gas jet actuator with eccentric...

This paper is concerned with the sequential control principle of an active acquisition system of gravity-gradient stabilized satellite with minimum hardware. In this system yaw sensors are not used and the velocity damping is realized effectively by using Logical circuits to process infrared horizon sensor's information, therefore, the expensive feedback packages are saved. Computation results show that this kind of control system is very powerful in adapting to launch vehicle and gas jet actuator with eccentric thrust. It is possible to get much higher acquisition accuracy by reasonable choice of system parameters. Unlike the traditional acquisition methods, a new acquisition concept is proposed in the paper.

本文讨论以最小的部件来构成重力梯度卫星主动捕获系统的分段控制原理,不仅节省了昂贵的偏航敏感器,而且通过逻辑电路对红外地平仪测量信息的适当处理,有效地实现了角速度阻尼,从而也省去了速率反馈部件。计算结果表明,这种控制系统对运载工具和喷气执行机构的推力偏心有较强的适应能力,合理地选择系统的参数可以达到较高的捕获精度。与传统的捕获方法不同,本文为重力梯度卫星提供一种新的捕获手段。

After investigating the technique for amplitude ranking correlation,this paper presents an algorithm for quantizing and ranking grey levels ofpixels of a sensor image.The optimum threshold for quantization has beenfound;after ranking a sensor image can be decomposed into sever1 0-1 codedimages,Then the coded images will be correlated with a reference imagewithout multiplication operations.For a give quantization function themeans and variance of metrics for correlation can be calculated theoreti-cally.Detection...

After investigating the technique for amplitude ranking correlation,this paper presents an algorithm for quantizing and ranking grey levels ofpixels of a sensor image.The optimum threshold for quantization has beenfound;after ranking a sensor image can be decomposed into sever1 0-1 codedimages,Then the coded images will be correlated with a reference imagewithout multiplication operations.For a give quantization function themeans and variance of metrics for correlation can be calculated theoreti-cally.Detection threshold sequences{T_k}for different signal to noise ratioscan be obtained for the image of Gaussian distribution,Computer simulation shows that the detection threshold sequence can detect each match pointeffectively for the images of Gaussian distribution with different correlationlengths and with signal to noise ratios from 5 to 1.It is also shown that,for actual terrain maps with signal to noise ratios from 3 to 1,correctmatch can be reached.

本文在分析了幅度排序相关技术以后,研究了一种对敏感器灰度量化排序的相关算法。本文选择合适的量化阈值,对敏感器灰度作量化排序,可将敏感器图分块成若干张0—1数码图。进一步用数码图与参考图相关,结果省去了所有的乘法运算。此外,在确定的量化函数条件下,对灰度为高新分布的图象从理论上分析计算出了度量值的均值与方差,从而得出在不同信噪比条件下的检测门限序列。在计算机上对不同相关长度的随机高斯分布的图象进行的模拟表明,门限序列对信噪比从5到1的敏感器图的匹配,都能有效地进行检测。对实际地形图进行模拟的结果是:当敏感器图的信噪比从3降到1时,都获得了正确的匹配。

 
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