scholarly journals Results of radiation tests of a new generation high-precision star sensor and its components

2021 ◽  
Vol 18 (6) ◽  
pp. 127-137
Author(s):  
R.V. Bessonov ◽  
◽  
A.A. Kobeleva ◽  
S.A. Prokhorova ◽  
P.S. Smetanin ◽  
...  
Keyword(s):  
High Precision ◽  
Star Sensor ◽  
New Generation

Ground Calibration System Design of High-Precision Star Sensor

2013 ◽  
Vol 694-697 ◽  
pp. 1068-1073
Author(s):  
Jie Duan ◽  
Zhi Yong An ◽  
Xiang Yang Sun
Keyword(s):  
High Precision ◽  
Optical Transmission ◽  
Angular Distance ◽  
Star Sensor ◽  
Optical Navigation ◽  
Calibration System ◽  
Large Size ◽  
High Magnitude ◽  
Design Plan ◽  
Ground Calibration

In order to meet the high precision calibration requirements of precision angular distance and high magnitude to the optical navigation sensor, A new style of high precision star simulator with large caliber, and long-focus, is presented. And then the main compositions of this simulator are designed in detail referring to the simulator, the steering mirror, the standard simulated targets and so on. According to the simulator characteristics of large size lens and multi lens, the structural of lens cone uses the tube sleeve and inner sleeves fixed together means. To eliminate the mirror deformation, the design plan based on the tiny stress is applied in steering mirror. In order to achieve a high magnitude, the light targets are simulated by optical transmission from OLED to high precision drone with fibers. Its degree ≤1〞,simulated magnitude≥5 that meet calibration requirements of the current high-precision optical navigation sensor.

High precision automatic measurement for alignment of camera and star-sensor in GF-2

2017 ◽  
Vol 25 (11) ◽  
pp. 2931-2938 ◽  
Author(s):  
孙刚 SUN Gang ◽  
杨再华 YANG Zai-hua ◽  
万毕乐 WAN Bi-le ◽  
张成立 ZHANG Cheng-li ◽  
代卫兵 DAI Wei-bing
Keyword(s):  
High Precision ◽  
Automatic Measurement ◽  
Star Sensor

Precise Attitude Determination of Ship Based on Star Sensor

2013 ◽  
Vol 380-384 ◽  
pp. 995-1002 ◽  
Author(s):  
Bing Liu ◽  
Feng Chen ◽  
Tong Shuang Zhang ◽  
Dean Zhong ◽  
Lei Yang ◽  
...  
Keyword(s):  
Engineering Design ◽  
High Precision ◽  
Attitude Determination ◽  
Measured Data ◽  
Star Sensor ◽  
Single Star

This paper analyses the attitude measured model and presents the attitude determination algorithm of space TT&C ship (space tracking, telemetry, and command ship) based on single star sensor. Considering lower precision of rolling angel for single star sensor, we proposed an algorithm by integrating attitude determination and redundancy measure to obtain high precision ship attitude data. Aiming at the circumstance of space TT&C ship, the factors that influence the precision of attitude measured data such as the number of star, atmosphere refraction correct and installation elevation are analyzed, which this can provide valuable references to the engineering design for star sensor used on space TT&C ship.

scholarly journals New generation low-energy probes for ultralight axion and scalar dark matter

2017 ◽  
Vol 32 (15) ◽  
pp. 1740004 ◽  
Author(s):  
Yevgeny V. Stadnik ◽  
Victor V. Flambaum
Keyword(s):  
Dark Matter ◽  
High Precision ◽  
Topological Defects ◽  
Interaction Constant ◽  
Higher Order ◽  
Classical Field ◽  
Low Energy ◽  
Detection Methods ◽  
Ordinary Matter ◽  
New Generation

We present a brief overview of a new generation of high-precision laboratory and astrophysical measurements to search for ultralight (sub-eV) axion, axion-like pseudoscalar and scalar dark matter (DM), which form either a coherently oscillating classical field or topological defects (solitons). In these new detection methods, the sought effects are linear in the interaction constant between DM and ordinary matter, which is in stark contrast to traditional searches for DM, where the sought effects are quadratic or higher order in the underlying interaction constants (which are extremely small).

scholarly journals Thermoelectric photodetector cooling system for high precision star sensor

2021 ◽  
Vol 18 (6) ◽  
pp. 109-115
Author(s):  
E.V. Belinskaya ◽  
◽  
R.V. Bessonov ◽  
N.N. Brysin ◽  
S.V. Voronkov ◽  
...  
Keyword(s):  
High Precision ◽  
Cooling System ◽  
Star Sensor

scholarly journals First Results from the Groningen AMS Facility

Radiocarbon ◽  
1995 ◽  
Vol 37 (2) ◽  
pp. 657-661 ◽  
Author(s):  
Johannes Van Der Plicht ◽  
Anita Aerts ◽  
Stef Wijma ◽  
Albert Zondervan
Keyword(s):  
The Netherlands ◽  
High Precision ◽  
Mass Spectrometer ◽  
Short Summary ◽  
Accelerator Mass Spectrometer ◽  
First Results ◽  
And Performance ◽  
New Generation ◽  
Full Operation

A new generation accelerator mass spectrometer has been installed at the Centre for Isotope Research in Groningen, The Netherlands. It is a dedicated 14C machine, with a capacity of measuring 3000 samples per year with high precision (< 0.5%). The system has been in full operation since the summer of 1994. We present here a short summary of the results and performance obtained thus far.

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