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Journal Articles Aircraft Engineering and Aerospace Technology Year : 2021

LIDAR altimeter conception for HERA spacecraft

Nicole Gomes Dias
  • Function : Author
Beltran Nadal Arribas
  • Function : Author
Paulo Gordo
  • Function : Author
Tiago Sousa
  • Function : Author
João Marinho
  • Function : Author
Rui Melicio
  • Function : Author
  • PersonId : 985967
António Amorim
  • Function : Author
Patrick Michel
Nicole G Dias
  • Function : Author
Beltran N Arribas
  • Function : Author
Neo-Mapp Team
  • Function : Author

Abstract

Purpose This paper aims to report the first iteration on the Light Detection and Ranging (LIDAR) Engineering Model altimeter named HELENA. HELENA is a Time of Flight (TOF) altimeter that provides time-tagged distances and velocity measurements. The LIDAR can be used for support near asteroid navigation and provides scientific information. The HELENA design comprises two types of technologies: a microchip laser and low noise sensor. The synergies between these two technologies enable developing a compact instrument for range measurements of up to 14 km. Thermal-mechanical and radiometric simulations of the HELENA telescope are reported in this paper. The design is subjected to vibrational, static and thermal conditions, and it was possible to conclude by the results that the telescope is compliant with the random vibration levels, the static load and the operating temperatures. Design/methodology/approach The Asteroid Impact & Deflection Assessment (AIDA) is a collaboration between the NASA DART mission and ESA Hera mission. The aim scope is to study the asteroid deflection through a kinetic collision. DART spacecraft will collide with Didymos-B, while ground stations monitor the orbit change. HERA spacecraft will study the post-impact scenario. The HERA spacecraft is composed by a main spacecraft and two small CubeSats. HERA will monitor the asteroid through cameras, radar, satellite-to-satellite doppler tracking, LIDAR, seismometry and gravimetry. Findings The HELENA design comprises two types of technologies: a microchip laser and low noise sensor. The synergies between these two technologies enable developing a compact instrument for range measurements of up to 14 km. Originality/value In this paper is reported the first iteration on the LIDAR Engineering Model altimeter named HELENA. HELENA is a TOF altimeter that provides time-tagged distances and velocity measurements. The LIDAR can be used for support near asteroid navigation and provides scientific information. The HELENA design comprises two types of technologies: a microchip laser and low noise sensor. The synergies between these two technologies enable developing a compact instrument for range measurements of up to 14 km.
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Dates and versions

insu-03381691 , version 1 (17-10-2021)

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Nicole Gomes Dias, Beltran Nadal Arribas, Paulo Gordo, Tiago Sousa, João Marinho, et al.. LIDAR altimeter conception for HERA spacecraft. Aircraft Engineering and Aerospace Technology, 2021, 93 (6), pp.1018-1028. ⟨10.1108/AEAT-12-2020-0300⟩. ⟨insu-03381691⟩
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