Optimum aperture placement for a space-based radar system using separated spacecraft interferometry

Sedwick, Raymond J.; Hacker, Troy L.; Miller, David W.

doi:10.2514/6.1999-4271

Cited by 2 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The GC design methods can be divided into analytical methods [11]- [15] and optimization methods [9], [10]. The analytical methods can obtain the rules of the required indicators of different missions [16], [17]. In [17], a TechSat-21 system is proposed to achieve ground moving target indicator (GMTI).…”

Section: Introductionmentioning

confidence: 99%

Forward-Looking Geometric Configuration Optimization Design for Spaceborne-Airborne Multistatic Synthetic Aperture Radar

Mao

Pei

Huo

et al. 2021

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

View full text Add to dashboard Cite

Spaceborne-airborne multistatic synthetic aperture radar (SA-MuSAR) has the ability to provide high-resolution forward-looking imagery for receivers, but it relies on careful design of the geometric configuration (GC). In this paper, a forward-looking GC optimization design method is proposed to obtain a high-quality fused image with limited observation time. First, the relationship between the spatial resolution and GC is illustrated by the wavenumber spectrum distribution of SA-MuSAR. Second, GC evaluators depending on the distribution of multiple wavenumber spectrum data are proposed. The GC design problem of coherent SA-MuSAR is transformed into a constrained multi-objective optimization problem (CMOP). An intelligent evolutionary algorithm is adopted to optimize the wavenumber spectrum distribution. With the proposed method, high-quality forward-looking imagery can be obtained with a short observation time. Numerical simulations are carried out to verify the effectiveness of the proposed method.

show abstract

Section: Introductionmentioning

confidence: 99%

Forward-Looking Geometric Configuration Optimization Design for Spaceborne-Airborne Multistatic Synthetic Aperture Radar

Mao

Pei

Huo

et al. 2021

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

View full text Add to dashboard Cite

show abstract

“…The following describes a distributed solution to this problem, which builds on the results of References [32,33]. The approach partially alleviates the computational difficulties associated with solving the aperture optimization problem by distributing the effort over the entire fleet, and then using a co-ordinator to recombine the results.…”

Section: Co-ordination Algorithmsmentioning

confidence: 99%

“…This computational load can be balanced by distributing the effort over the fleet using a bidding process [32,33]. For example, in a typical formation flying scenario [2,7], the vehicles will be arranged as part of a passive aperture.…”

Section: Co-ordination Algorithmsmentioning

confidence: 99%

Co‐ordination and control of distributed spacecraft systems using convex optimization techniques

Tillerson

Tsourdos

How

2002

Intl J Robust & Nonlinear

206

114

View full text Add to dashboard Cite

SUMMARYFormation flying of multiple spacecraft is an enabling technology for many future space science missions. However, the co-ordination and control of these instruments poses many difficult design challenges. This paper presents fuel/time-optimal control algorithms for a co-ordination and control architecture that was designed for a fleet of spacecraft. This architecture includes low-level formation-keeping algorithms and a high-level fleet planner that creates trajectories to re-size or re-target the formation. The trajectory and formation-keeping optimization algorithms are based on the solutions of linear and integer programming problems. The result is a very flexible optimization framework that can be used off-line to analyse various aspects of the mission design and in real time as part of an onboard autonomous formation flying control system. The overall control approach is demonstrated using a nonlinear simulation environment that includes realistic measurement noises, disturbances, and actuator nonlinearities.

show abstract

Optimum aperture placement for a space-based radar system using separated spacecraft interferometry

Cited by 2 publications

References 1 publication

Forward-Looking Geometric Configuration Optimization Design for Spaceborne-Airborne Multistatic Synthetic Aperture Radar

Forward-Looking Geometric Configuration Optimization Design for Spaceborne-Airborne Multistatic Synthetic Aperture Radar

Co‐ordination and control of distributed spacecraft systems using convex optimization techniques

Contact Info

Product

Resources

About