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长春光学精密机械与物... [6]
力学研究所 [2]
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OAI收割 [8]
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会议论文 [8]
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Bi-camera ranger-finder and error analyze based on binocular parallax (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM2011, October 21, 2011 - October 23, 2011, Shanghai, China
Wang Z. C.
;
Dai M.
;
Huang J.
;
Wang Y. Y.
;
Chen X. L.
;
Gao Y. J.
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2013/03/25
The traditional facilities that used to find range are mostly based on laser or ultrasonic. Now
based on binocular parallax of human eyes
we advance a method used to get the distance by measuring the offset on image panel. On this foundation
we also analyze the error in forward. The academic analysis indicate that the measurement would be impacted severely by transverse offset and angle-measuring offset
in contrast
much slightly by lengthways offset. When we put this facility into practice
this facility can suffice practical demand completely if we select the space between bi-camera and the focus of facility rationally. (2012) Trans Tech Publications
Switzerland.
Research on esplanade-cleaning robot’s target recognition
会议论文
OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, Inner Mongolia, China, JUL 15-17, 2011
作者:
Fan YY(范有余)
;
Liu Y
;
Liu Y
;
Liu Y
;
Liu Y
收藏
  |  
浏览/下载:27/0
  |  
提交时间:2013/02/26
Algorithms
Cleaning
Least squares approximations
Mechanics
Cleaning-robots
Distance measuring
Least square methods
Target recognition
Tricolor characteristics
Research on esplanade-cleaning robot's target recognition
会议论文
OAI收割
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, Inner Mongolia, China, July 15, 2011 - July 17, 2011
作者:
Li JH
;
Liu Y
;
Fan YY(范有余)
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2017/06/20
Cleaning-robots
Distance measuring
Least square methods
Target recognition
Tricolor characteristics
The method on the measurement of the aircraft attitude by the spatial cosines relationship of the single station and planes to the intersection the multi-station of electro-optical theodolite (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Zhao L.-R.
;
Cao Y.-G.
收藏
  |  
浏览/下载:16/0
  |  
提交时间:2013/03/25
In order to realize the aircraft attitude measurement
The paper advances electro-optical theodolite methods of measuring the aircraft attitude by using the spatial cosines relationship the single station theodolite and how to use intersection of the multi-station theodolite. The single station theodolite was introduced in a measured distance from the aircraft posture information. An exhaustive approach was used to access to the aircraft axis of the feature points and the location in the space was used to obtain space posture parameters. The multi-station theodolite was introduced to get the information of the aircraft flight attitude by method of using planes to the intersection. Two-dimensional image to obtain objective axis by fitting algorithm using Hough transform. And then
Calculate the vertical distance of the origin to the target of the central axis and the origin to the target of the central axis of the angle between the normal and the X-axis obtaining the linear equation in the two-dimensional plane. Two-dimensional axis of the target image and the camera system's optical center only identified a space plane. The aircraft yaw axis angle and pitch angle can be obtained by getting the space axis using plains to the intersection method. Experimental results show that attitude angle error of the single station theodolite is less than 1 when its distance is less than 6000m and attitude angle error of the multi-station theodolite is less than 0.6 when its intersection angle is between 30 and 150. In this paper
according to test result of precision comparing the mathematical model is correct and the algorithm is reasonable in extracting effective parameters of the aircraft's attitude. 2010 IEEE.
Method for obtaining real temperature of space object by using the ratio of emissivity at different wavelengths (EI CONFERENCE)
会议论文
OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
Guo-Qiang W.
;
Tao C.
;
Jian-Li W.
收藏
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浏览/下载:33/0
  |  
提交时间:2013/03/25
The infrared radiation character (temperature and efficiency radiation area) of a space object is an important characteristic
we can judge the state of the object working in orbit by measuring temperature and variety. Due to lower temperature of the object and far distance between the object and the earth
the infrared radiation signal is faintness
therefore temperature and the infrared radiation character is difficult to measure. There are several methods to measure the temperature of the object in theory and each one has its applicability respectively
such as applying Wien Law to compute temperature
based on Stefan-Bolzmann law to compute temperature and utilizing multi-spectrum detector to measure temperature As a whole these methods are based on the hypothesis that the object is a Black-body or the radiance emissivity is constant. In fact
homochromatic radiance of object is not a constant but a function that changes with wavelength. Since the problem that an object whose homochromatic radiance s not a constant which results in temperature can not be computed accurately
we bring forward a method to contrast the luminance of the object at different wavelengths and deduce the relationship among homochromatic radiance and wavelength and the temperature of Black-body
from which we can compute real temperature of object. 2009 SPIE.
Design of CAN bus interface for photoelectric encoder in the spaceflight camera (EI CONFERENCE)
会议论文
OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者:
Wan Q.-H.
;
She R.-H.
;
Sun Y.
;
Sun Y.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
In order to make photoelectric encoder usable in a spaceflight camera which adopts CAN bus as the communication method
CAN bus interface of the photoelectric encoder is designed in this paper. CAN bus interface hardware circuit of photoelectric encoder consists of CAN bus controller SJA 1000
CAN bus transceiver TJA1050 and singlechip. CAN bus interface controlling software program is completed in C language. A ten-meter shield twisted pair line is used as the transmission medium in the spaceflight camera
and speed rate is 600kbps.The experiments show that: the photoelectric encoder with CAN bus interface which has the advantages of more reliability
real-time
transfer rate and transfer distance overcomes communication line's shortcomings of classical photoelectric encoder system. The system works well in automatic measuring and controlling system. 2009 SPIE.
Study of high speed photography measuring instrument (EI CONFERENCE)
会议论文
OAI收割
27th International Congress on High-Speed Photography and Photonics, September 17, 2006 - September 22, 2006, Xi'an, China
Zhang Z.
;
Sun J.
;
Wu K.
收藏
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浏览/下载:25/0
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提交时间:2013/03/25
High speed photograph measuring instrument is mainly used to measure and track the exterior ballistics
which can measure the flying position of the missile in the initial phase and trajectory. A new high speed photograph measuring instrument is presented in this paper. High speed photography measuring system records the parameters of object real-time
and then acquires the flying position and trajectory data of the missile in the initial phase. The detection distance of high speed photography is more than 4.5km
and the least detection distance is 450m
under the condition of well-balanced angular velocity and angular acceleration
program pilot track error less than 5. This instrument also can measure and record the flying trail and trajectory parameters of plane
aero naval missile.
Mechanical interleaving assembly of TDICCD focal plane for space camera (EI CONFERENCE)
会议论文
OAI收割
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Ren J.-Y.
;
Zhang X.-X.
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2013/03/25
TDICCD assembly is a major method of acquiring wide field for space camera. For the demand of space camera's wide view field and high resolution
the technique of mechanical interleaving assembly is discussed. Its principle
method of adjusting and testing as well as the structure of focal plane are described. Using mechanical tangent-screws adjusting method
the assembly with TDI CCDs for wide field space camera focal plane is finished on the facility which is composed of a long work-distance microscope and a negative pressure and adsorption guide apparatus. The assembly length of TDICCD focal plane for wide field space camera reaches 560mm
and the measuring error is not more than 3.2 m
the mechanical interleaving assembly method has effect of zero clearance and can achieve good image quality.