Preliminary development plan of the alr, the laser rangefinder for the aster deep space mission to the 2001 sn263 asteroid

Brum, Antonio Gil Vicente de; Hetem, A.; Rêgo, Israel; Francisco, Cayo Prado Fernandes; Fenili, André; Madeira, Fernando; Cruz, Flávio C.; Assafin, M.

doi:10.5028/jatm.2011.03033611

Cited by 18 publications

(5 citation statements)

References 3 publications

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“…According to equation (11), the method of using local registration to obtain S W is expressed as: Equation ( 12) can be expanded as:…”

Section: Laser-spot Local Registration Methodsmentioning

confidence: 99%

“…Combined sensors play a pivotal role in data collection from diverse sources, thereby enhancing overall perception capabilities [1]. With the advancements in sensor fusion technology, the camera-laser rangefinder (camera-LRF) system has extensive applications in the fields of unmanned aerial vehicles [2], unmanned vehicle [3][4][5][6], and aerospace industries [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Accurate extrinsic calibration for the invisible-light 1D laser rangefinder and camera

Pu,

Ren,

Yang

et al. 2024

Meas. Sci. Technol.

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A combined sensor, comprising a camera and a one-dimensional laser rangefinder (1D LRF), has wide application across engineering sectors, notably in aerospace. This combined sensor is pivotal for earth observation and deep space exploration. To achieve precise and stable external parameters for this combined sensor, an accurate external calibration method is proposed. Initially, a technique for localized registration of laser spots is introduced to ensure precise determination of their positions, addressing the challenge of laser invisibility in a 1D LRF. Subsequently, a data evaluation criterion known as the data synthesis criterion is presented, addressing the issue of limited constraints in traditional calibration methods. This criterion evaluates relative errors encompassing 1D LRF ranging values, camera external parameters, and laser spot positions. Finally, based on the proposed criteria, a robust extrinsic calibration method is introduced that automatically filters observation data with significant errors and utilizes the growth rate of camera spatial resolution as the termination condition. The efficacy of the proposed method is confirmed through simulation experiments and real-world data experiments.

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“…According to equation (11), the method of using local registration to obtain S W is expressed as: Equation ( 12) can be expanded as:…”

Section: Laser-spot Local Registration Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Accurate extrinsic calibration for the invisible-light 1D laser rangefinder and camera

Pu,

Ren,

Yang

et al. 2024

Meas. Sci. Technol.

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“…In particular, it is believed that those objects hold information about the chemical mixture which formed the planets, as well as records of the geological evolution of the minor bodies in the interplanetary regions. Many missions have the goal of exploring these bodies, like Belton et al, 1992Belton et al, , 1996Veverka et al, 2001;Yoshikawa et al, 2007;Jones et al, 2011;Huntress et al, 2006;Surovik and Scheeres, 2014;Broschart and Scheeres, 2005;Bellerose and Scheeres, 2008;Brum et al, 2011. Some other researches considered general trajectories around smaller bodies, which can be used in mission design of future missions to asteroids, like Werner, 1994;Rossi et al, 1999;Scheeres, 1994Scheeres, , 2012aScheeres and Hu, 2001; Bartczakk et al, 2006;Byram and Scheeres, 2009;Venditti and Prado, 2014. The present research is related to the mission named ASTER, that has some preliminary studies available in the literature Macau et al 2010).…”

Section: Introductionmentioning

confidence: 94%

Developing the “Precessing Inclined Bi-Elliptical Four-Body Problem with Radiation Pressure” to search for orbits in the triple asteroid 2001SN263

Masago

Prado

Chiaradia

et al. 2016

Advances in Space Research

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Space missions to visit small bodies of the Solar System are important steps to improve our knowledge of the Solar System. Usually those bodies do not have well known characteristics, as their gravity field, which make the mission planning a difficult task. The present paper has the goal of studying orbits around the triple asteroid 2001SN 263 , a Near-Earth Asteroid (NEA). A mission to this system allows the exploration of three bodies in the same trip. The distances reached by the spacecraft from those three bodies have fundamental importance in the quality of their observations. Therefore, the present research has two main goals: (i) to develop a semi-analytical mathematical model, which is simple, but able to represent the main characteristics of that system; (ii) to use this model to find orbits for a spacecraft with the goal of remaining the maximum possible time near the three bodies of the system, without the need of space maneuvers. This model is called ''Precessing Inclined Bi-Elliptical Problem with Radiation Pressure" (PIBEPRP). The use of this model allow us to find important natural orbits for the exploration of one, two or even the three bodies of the system. These trajectories can be used individually or combined in two or more parts using orbital maneuvers.

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“…The central motivation for such research and for the previous work, Lucas Jr. et al stand on the Brazilian space project ''ASTER'' of sending a probe to the triple asteroid system 2001SN263. 4,[9][10][11] This study will involve, after all, the use of spectrometric techniques to identify the chemical and the structural composition. Such study may identify if the satellites b and c were either formed from the main body a, or from another external asteroid.…”

Section: Introductionmentioning

confidence: 99%

Study of the Influence of Temperature on the Optical and Structural Properties of Dolomite

et al. 2020

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The present work reports the results of structural and optical investigations in samples of natural dolomite, subjected to thermal treatment at different temperatures (500 ℃ to 700 ℃) and times (one up to three hours). The motivation is the evaluation of the changes that may occur in carbonaceous asteroids and meteorites, respectively, subjected to the action of the solar radiation and heated during the fall in the atmosphere. We carried out scanning electron microscopy, electron dispersive spectroscopy, X-ray diffraction, optical reflectance and photoluminescence measurements

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Preliminary development plan of the alr, the laser rangefinder for the aster deep space mission to the 2001 sn263 asteroid

Cited by 18 publications

References 3 publications

Accurate extrinsic calibration for the invisible-light 1D laser rangefinder and camera

Accurate extrinsic calibration for the invisible-light 1D laser rangefinder and camera

Developing the “Precessing Inclined Bi-Elliptical Four-Body Problem with Radiation Pressure” to search for orbits in the triple asteroid 2001SN263

Study of the Influence of Temperature on the Optical and Structural Properties of Dolomite

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