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    • 11. 发明授权
    • Rapid and high precision centroiding method and system for spots image
    • 快速高精度重心法和斑点图像系统
    • US08068673B2
    • 2011-11-29
    • US11687338
    • 2007-03-16
    • Guangjun ZhangJie JiangQiaoyun FanXuetao Hao
    • Guangjun ZhangJie JiangQiaoyun FanXuetao Hao
    • G06K9/66
    • G06T7/66
    • The disclosure relates to a rapid and high precision centroiding method for spots image comprising the following steps. First, the method requires convoluting the gray value of a pixel with a Gaussian filter and judging whether the result thereof exceeds a predetermined threshold. If the value exceeds the predetermined threshold, the method requires marking the current pixel with a flag to identify which spot it belongs to, and then accumulating the product of the gray value and a coordinate value of the same spot; and at the same time, accumulating the gray value of the same spot; and saving the results of the accumulation respectively. If the gray value of the pixel does not exceed the predetermined threshold, the method requires marking the current pixel as a background flag. After all pixels of the image has been disposed of completely, the method includes calculating a quotient of the accumulations of the product of the gray value and the coordinate value and the accumulations of the gray value, and outputting the quotients. At the same time, a centroiding system for spots image is also presented.
    • 本公开涉及一种用于斑点图像的快速和高精度重心方法,包括以下步骤。 首先,该方法需要用高斯滤波器对像素的灰度值进行卷积,并判断其结果是否超过预定阈值。 如果该值超过预定阈值,则该方法需要用标志标记当前像素,以标识其属于哪一个点,然后累积灰度值与同一点的坐标值的乘积; 同时累积同一斑点的灰度值; 并分别节省积累的结果。 如果像素的灰度值不超过预定阈值,则该方法需要将当前像素标记为背景标志。 在完全处理图像的所有像素之后,该方法包括计算灰度值与坐标值的乘积的积分和灰度值的积累的商,并输出商。 同时,还提出了斑点图像的重心系统。
    • 12. 发明授权
    • Method and device for calibration of digital celestial sensor
    • 数字天体传感器校准方法和装置
    • US07822572B2
    • 2010-10-26
    • US12036888
    • 2008-02-25
    • Guangjun ZhangXinguo WeiQiaoyun FanJie Jiang
    • Guangjun ZhangXinguo WeiQiaoyun FanJie Jiang
    • G01C25/00
    • G01S3/7867B64G1/361B64G1/363
    • A method for calibration of a digital celestial sensor is disclosed. First, an integrated mathematic model for imaging of a celestial sensor is established according to external and internal parameters of the calibration system of the celestial sensor. Second, by rotating two axes of a rotator by different angles, calibration points data are acquired and sent to a processing computer through an interface circuit. Finally, a two-step calibration program is implemented to calculate the calibration parameters by substituting calibration points' data to the integrated mathematic model. An application device of the calibration method is also provided. The device may include a celestial simulator to provide simulated sunlight or starlight, a two-axis rotator to acquire different calibration points' data, and a processing computer to record the calibration points' data and calculate the calibration parameters.
    • 公开了一种用于校准数字天体传感器的方法。 首先,根据天体传感器校准系统的外部参数和内部参数建立了天体传感器成像的综合数学模型。 第二,通过旋转不同角度旋转两个轴,获取校准点数据,并通过接口电路发送到处理计算机。 最后,通过将校准点的数据代入综合数学模型,实施了两步校准程序来计算校准参数。 还提供了校准方法的应用装置。 该装置可以包括用于提供模拟太阳光或星光的天体模拟器,用于获取不同校准点数据的双轴旋转器,以及记录校准点数据并计算校准参数的处理计算机。
    • 13. 发明授权
    • Signal processing method and device for multi aperture sun sensor
    • 多光圈太阳传感器信号处理方法及装置
    • US07615728B2
    • 2009-11-10
    • US11967772
    • 2007-12-31
    • Guangjun ZhangJie JiangQiaoyun Fan
    • Guangjun ZhangJie JiangQiaoyun Fan
    • G01C21/02G01J1/20
    • G01J1/42G01C21/02G01J1/04G01J1/0437G01J2001/4266G01S3/784G01S3/7862
    • The disclosure relates to a signal processing method for multi aperture sun sensor comprising the following steps: reading the information of sunspots in a row from a centroid coordinate memory, judging the absence of sunspots in that row, identifying the row and column index of the sunspots in the complete row, selecting the corresponding calibration parameter based on the row and column index, calculating attitude with the attitude calculation module the corresponding to identified sunspots, averaging the accumulated attitude of all sunspots and outputting the final attitude. At the same time, a signal processing device for multi aperture sun sensor is also presented. It is comprised of a sunspot absence judgment and an identification module and an attitude calculation module. The disclosure implements the integration of sun sensors without additional image processor or attitude processor, reduces field programmable gate array resource and improves the reliability of sun sensors.
    • 本发明涉及一种用于多孔径太阳传感器的信号处理方法,包括以下步骤:从质心坐标存储器读取一行中的太阳黑子的信息,判断该行中没有太阳黑子,识别太阳黑子的行和列索引 在完整的行中,根据行和列索引选择相应的校准参数,使用姿态计算模块计算对应于确定的太阳黑子的姿态,对所有太阳黑子的累积姿态进行平均并输出最终姿态。 同时,还提出了一种用于多光圈太阳传感器的信号处理装置。 它由无太阳黑子判断和识别模块和姿态计算模块组成。 该公开实现了太阳传感器的集成,而没有附加的图像处理器或姿态处理器,减少了现场可编程门阵列资源并且提高了太阳传感器的可靠性。
    • 16. 发明授权
    • Voltage reference buffer using voltage battery level shifter
    • 电压参考缓冲器使用电压电池电平转换器
    • US09190859B1
    • 2015-11-17
    • US13115813
    • 2011-05-25
    • Hao ZhouYonghua SongTao ShuiJie Jiang
    • Hao ZhouYonghua SongTao ShuiJie Jiang
    • H02J7/00
    • H03K17/161H02J7/0054H03K17/063H03K2217/0081
    • In one embodiment, an apparatus includes a first supply voltage and a second supply voltage. Level shifter circuitry is configured as a first voltage battery to shift a first voltage and a second voltage battery to shift a second voltage. A first circuit receives the shifted first voltage and sets a third voltage, and receives the shifted second voltage and sets a fourth voltage. The shifted first voltage is greater than the first supply voltage and the shifted second voltage level is less than the second supply voltage. A second circuit sets a fifth voltage and a sixth voltage. The fifth voltage follows the third voltage and the sixth voltage following the fourth voltage.
    • 在一个实施例中,装置包括第一电源电压和第二电源电压。 电平移位器电路被配置为第一电压电池以移动第一电压和第二电压电池以移位第二电压。 第一电路接收移位的第一电压并设置第三电压,并接收移位的第二电压并设置第四电压。 移位的第一电压大于第一电源电压,并且移位的第二电压电平小于第二电源电压。 第二电路设置第五电压和第六电压。 第五电压跟随第四电压的第三电压和第六电压。
    • 19. 发明申请
    • SIGNAL PROCESSING METHOD AND DEVICE FOR MULTI APERTURE SUN SENSOR
    • 信号处理方法和多孔传感器的装置
    • US20080317283A1
    • 2008-12-25
    • US11967772
    • 2007-12-31
    • Guangjun ZhangJie JiangQiaoyun Fan
    • Guangjun ZhangJie JiangQiaoyun Fan
    • G01C9/06G01C11/04
    • G01J1/42G01C21/02G01J1/04G01J1/0437G01J2001/4266G01S3/784G01S3/7862
    • The disclosure relates to a signal processing method for multi aperture sun sensor comprising the following steps: reading the information of sunspots in a row from a centroid coordinate memory, judging the absence of sunspots in that row, identifying the row and column index of the sunspots in the complete row, selecting the corresponding calibration parameter based on the row and column index, calculating attitude with the attitude calculation module the corresponding to identified sunspots, averaging the accumulated attitude of all sunspots and outputting the final attitude. At the same time, a signal processing device for multi aperture sun sensor is also presented. It is comprised of a sunspot absence judgment and an identification module and an attitude calculation module. The disclosure implements the integration of sun sensors without additional image processor or attitude processor, reduces field programmable gate array resource and improves the reliability of sun sensors.
    • 本发明涉及一种用于多孔径太阳传感器的信号处理方法,包括以下步骤:从质心坐标存储器读取一行中的太阳黑子的信息,判断该行中没有太阳黑子,识别太阳黑子的行和列索引 在完整的行中,根据行和列索引选择相应的校准参数,使用姿态计算模块计算对应于确定的太阳黑子的姿态,对所有太阳黑子的累积姿态进行平均并输出最终姿态。 同时,还提出了一种用于多光圈太阳传感器的信号处理装置。 它由无太阳黑子判断和识别模块和姿态计算模块组成。 该公开实现了太阳传感器的集成,而没有附加的图像处理器或姿态处理器,减少了现场可编程门阵列资源并且提高了太阳传感器的可靠性。