Development of star image simulator for star sensor algorithm validation

Ardi, N S; Saifudin, Muhammad Arif; Poetro, Ridanto Eko; Fathurrohim, Luqman

doi:10.1088/1742-6596/1130/1/012020

Cited by 3 publications

(7 citation statements)

References 1 publication

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“…If the stray light is more uniform, the signal-to-noise ratio of the simulated star point will be reduced, resulting in difficulty in extracting the centroid position of the star point. If the stray light is not uniform, some maximum values of the stray light will easily affect the centroid position of the nearby star point, the grayscale of the star point will increase to 199.0, and the star point position will be mistakenly received by the camera as (6,4).…”

Section: Stray Light Analysis and Suppression Of Dim Target Simulatio...mentioning

confidence: 99%

“…Airbus DS's Star Tracker Optical Simulator (STOS) [3], for the first time as the star chart display devices using LCOS, realize the dynamic display of the star chart, and star position simulation error is superior to 20 ′′ . Subsequently, Germany Jenaoptronik also launched an Optical Star Simulator (OSI) [4] and improved the star position correction algorithm; the star position simulation error is better than 18 ′′ , and the magnitude simulation range is +2~+8 Mv. With the development of dynamic display technology, the US Air Force Research Laboratory developed TASAT [5], which is used for the high-precision simulation of the photoelectric tracking process of the photoelectric detection system on the satellite and other targets.…”

Section: Introductionmentioning

confidence: 99%

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Research on Optical System of Dim Target Simulator Based on Polarization Stray Light Suppression

Liu,

Zheng

et al. 2024

Applied Sciences

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In view of the lack of high-precision optical simulation equipment for dim space targets at present, in this study, a simulation method for dim space targets based on polarization stray light suppression is proposed, the overall optical system architecture of the optical engine for depolarization stray light suppression is constructed, the mechanism of stray light generation is explored, and the dark state light leakage suppression method is presented by compensating the phase of LCOS reflected light with wave plate; a high-image quality collimating optical system with large field of view and flat aberration is designed based on the illumination system optimization method of the critical angle matching of the spectroscopic film; and the polarization stray light suppression effect and star position simulation error of the dim target simulator are tested. The test results show that the illumination of the simulated dim target is ≮10−10 lx, the contrast is 6.96, the non-uniformity of the bright state is only 5.88%, and the simulation error of the star position is 9.9″. This research can make some contributions to enhancing the observability of detecting dim targets, breaking through the detection technology of extremely dark targets in space, developing advanced deep space detection capabilities, and improving the engineering technology system of deep space exploration.

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Section: Stray Light Analysis and Suppression Of Dim Target Simulatio...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Optical System of Dim Target Simulator Based on Polarization Stray Light Suppression

Liu,

Zheng

et al. 2024

Applied Sciences

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“…Many satellites and spacecraft are equipped with star trackers and rely on them for this information for missions like Earth observation or deep space exploration. It takes an image from a set of stars and compares it with the star catalogue, determines the attitude of the spacecraft and thus the deviation is controlled [1].…”

Section: Introductionmentioning

confidence: 99%

“…Considering all of these issues, testing would be better suited in a software simulation capable of simulating real space environments according to the input parameters which vary with the specifics of the mission. A simulation gives the benefit of getting clear results of testing without interfering factors so that the test results can be used to reduce or prevent the chances of failure of the device [1].…”

Section: Introductionmentioning

confidence: 99%

Static Simulation of Star Images

Tejaswini¹,

Vaarunya²,

Sugur³

et al. 2021

Lecture Notes in Electrical Engineering

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A star tracker is an optical device used to track and measure the star positions. A star tracker, when placed on a satellite or spacecraft, can be used to determine the attitude or orientation of the satellite/spacecraft with respect to the position of stars. For this to be done, the tracker must obtain images of the stars, calculate the position with reference to the field of view of the spacecraft and identify the stars by relating their current position with respect to their absolute position by using a star catalog. This project simulates the acquired image and motion of the stars according to the field of view of the star tracker placed on a spacecraft orbiting a planet. An interface for the user was made including input parameters like the field of view (FOV), magnitudes, direction cosines etc. After these parameters, having been defined by the user, are given as input, the corresponding simulation output is displayed.

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“…The ability of real-time attitude information acquisition will be restricted when the satellite rolls violently or encounters strong light interference [5]. At the same time, the field angle of highprecision optical sensor is very small, it is necessary to install multiple optical sensors on each surface of the satellite [6].…”

Section: Introductionmentioning

confidence: 99%

Structural process and testing of tunneling attitude sensor based on gravity gradient torque measurements

Cao¹,

Zhao²,

Xing³

et al. 2021

J. Micromech. Microeng.

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The function of determining the orientation of a satellite in orbit is known as attitude determination. Depending on the missions, this important function is typically performed by different optical instruments. Due to the limited field of view, multiple optical sensors are placed in all directions to ensure large coverage. A kind of inertial sensor that uses the gravity gradient torque as a reference for attitude determination was proposed recently. At present, the volume of this kind of sensors is large and the accuracy is not high enough. In this paper, we propose an attitude sensor, which is composed of a barbell-shaped sensitive structure with larger moment of inertia and a small displacement detection module based on the tunneling effect. The sensitive structure is fabricated by silicon-on-glass process based on micro-electro-mechanical system technology. As a result, the sensitive structure has a smaller size, and the accuracy of angle measurement can reach 7.3° (3σ) in the range of −20° to +20°.

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Development of star image simulator for star sensor algorithm validation

Cited by 3 publications

References 1 publication

Research on Optical System of Dim Target Simulator Based on Polarization Stray Light Suppression

Research on Optical System of Dim Target Simulator Based on Polarization Stray Light Suppression

Static Simulation of Star Images

Structural process and testing of tunneling attitude sensor based on gravity gradient torque measurements

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