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Numerical Methods for Discontinuous Remote Sensing Coverage Analysis
Numerical Methods for Discontinuous Remote Sensing Coverage Analysis
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260311091532.5
- ISBN
- 9798270231552
- DDC
- 518
- 저자명
- Sipps, Jonathan
- 서명/저자
- Numerical Methods for Discontinuous Remote Sensing Coverage Analysis / Jonathan Sipps
- 발행사항
- [Sl] : The University of Texas at Austin, 2025
- 형태사항
- 1 electronic resource (284 pages)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
- 주기사항
- Advisors: Magruder, Lori Committee members: Fridovich-Keil, David; Frank, Jeremy; Bettadpur, Srinivas; Ann Chen, Jingyi.
- 학위논문주기
- - Ph.D. : The University of Texas at Austin, 2025.
- 초록/해제
- 요약Distributed Spacecraft Missions (DSMs) have the potential to revolutionize Earth observation through increased spatial, temporal, spectral, and radiometric data resolution, but iterating over all possible mission architectures to identify a "best" candidate presents a novel computational challenge. Dominant elements in the trade space are orbit design, instrument choice, the number of satellites, and the DSM (or constellation) structure, each of which may have multiple options, which increases trade space size combinatorically. Compounding this complexity is the need to satisfy multiple objectives at once, balancing the total and consistent coverage of Earth. Evolutionary algorithms can search the trade space intelligently but they require many simulation evaluations to approximate the typically multi-objective pareto front. We have developed an efficient semi-analytic routine, to compute the access events of Earth-based targets for circular, low Earth orbit remote sensing platforms, which is from 1 to 4 orders of magnitude faster than competing state-of-the-art methods, due to low algorithm complexity with respect to simulation period and instrument swath size. Exhaustive search over all orbital revolutions is replaced with a hash-based vector search, which instantly queries the orbital revolution of target observation. The technique further has relaxed assumptions such as the need for repeating ground tracks or simplified constellation structures commonly found in literature. In addition, we have formalized the observation of probabilistic targets, particularly useful for sub-sampled coverage, as applied to lidar or small swath coverage, or coverage of geophysically obscured targets, such as under cloud cover or dense vegetation. We leverage Monte Carlo to evaluate the count of probabilistic target observations, the probability of at least one observation, and the stochastic revisit interval, extensible to a field of spatial targets. Coupled with relevant geophysical datasets, we apply these techniques to reveal the optimal inclination of a bathymetric space-borne lidar to be 110 deg. Then we find the optimal distribution of satellites in sun-synchronous vs. inclined orbital regimes to optimally observe global wildfire at night. Lower per-evaluation runtime via a novel semi-analytic routine, coupled with data-driven coverage, give mission planners a tool to meet the computational demands of DSM design, exploring the wide array of options to meet the National Academies Decadal Survey science objectives.
- 언어주기
- English
- 일반주제명
- Geophysics
- 일반주제명
- Remote sensing
- 일반주제명
- Theoretical physics
- 키워드
- Orbit design
- 기타저자
- The University of Texas at Austin Aerospace Engineering
- 기본자료저록
- Dissertations Abstracts International. 87-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798270231552
■040 ▼aMiAaPQD▼beng▼cMiAaPQD▼erda
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■1001 ▼aSipps, Jonathan▼eauthor.
■24510▼aNumerical Methods for Discontinuous Remote Sensing Coverage Analysis ▼cJonathan Sipps
■260 ▼a[Sl]▼bThe University of Texas at Austin▼c2025
■264 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a1 electronic resource (284 pages)
■336 ▼atext▼btxt▼2rdacontent
■337 ▼acomputer▼bc▼2rdamedia
■338 ▼aonline resource▼bcr▼2rdacarrier
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-06, Section: B.
■500 ▼aAdvisors: Magruder, Lori Committee members: Fridovich-Keil, David; Frank, Jeremy; Bettadpur, Srinivas; Ann Chen, Jingyi.
■5021 ▼bPh.D.▼cThe University of Texas at Austin▼d2025.
■520 ▼aDistributed Spacecraft Missions (DSMs) have the potential to revolutionize Earth observation through increased spatial, temporal, spectral, and radiometric data resolution, but iterating over all possible mission architectures to identify a "best" candidate presents a novel computational challenge. Dominant elements in the trade space are orbit design, instrument choice, the number of satellites, and the DSM (or constellation) structure, each of which may have multiple options, which increases trade space size combinatorically. Compounding this complexity is the need to satisfy multiple objectives at once, balancing the total and consistent coverage of Earth. Evolutionary algorithms can search the trade space intelligently but they require many simulation evaluations to approximate the typically multi-objective pareto front. We have developed an efficient semi-analytic routine, to compute the access events of Earth-based targets for circular, low Earth orbit remote sensing platforms, which is from 1 to 4 orders of magnitude faster than competing state-of-the-art methods, due to low algorithm complexity with respect to simulation period and instrument swath size. Exhaustive search over all orbital revolutions is replaced with a hash-based vector search, which instantly queries the orbital revolution of target observation. The technique further has relaxed assumptions such as the need for repeating ground tracks or simplified constellation structures commonly found in literature. In addition, we have formalized the observation of probabilistic targets, particularly useful for sub-sampled coverage, as applied to lidar or small swath coverage, or coverage of geophysically obscured targets, such as under cloud cover or dense vegetation. We leverage Monte Carlo to evaluate the count of probabilistic target observations, the probability of at least one observation, and the stochastic revisit interval, extensible to a field of spatial targets. Coupled with relevant geophysical datasets, we apply these techniques to reveal the optimal inclination of a bathymetric space-borne lidar to be 110 deg. Then we find the optimal distribution of satellites in sun-synchronous vs. inclined orbital regimes to optimally observe global wildfire at night. Lower per-evaluation runtime via a novel semi-analytic routine, coupled with data-driven coverage, give mission planners a tool to meet the computational demands of DSM design, exploring the wide array of options to meet the National Academies Decadal Survey science objectives.
■546 ▼aEnglish
■590 ▼aSchool code: 0227
■650 4▼aGeophysics
■650 4▼aGeographic information science
■650 4▼aRemote sensing
■650 4▼aTheoretical physics
■653 ▼aDistributed Spacecraft Missions
■653 ▼aEarth observation
■653 ▼aOrbit design
■653 ▼aSemi-analytic routine
■7102 ▼aThe University of Texas at Austin▼bAerospace Engineering.▼edegree granting institution.
■7201 ▼aMagruder, Lori▼edegree supervisor.
■7730 ▼tDissertations Abstracts International▼g87-06B.
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17361191▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


