RADARSAT-2 initial system operations and performance

Hillman, Anthony; Rolland, P.; Periard, R.; Luscombe, A.P.; Chabot, M.; Chen, C.; Martens, N.

doi:10.1109/igarss.2009.5418200

Cited by 7 publications

(4 citation statements)

References 1 publication

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“…S YNTHETIC aperture radar (SAR) systems for remote sensing applications have been gaining special interest during the last decade, as demonstrated by the increased number of missions: TerraSAR-X (TSX), TanDEM-X (TDX), COSMO-SkyMed, RADARSAT-2 (RS2), Sentinel-1 and PAZ [1]- [4]. Some of them include an experimental mode that adds ground moving target indication (GMTI) capabilities from spaceborne platforms.…”

Section: Introductionmentioning

confidence: 99%

A Performance Evaluation of SAR-GMTI Missions for Maritime Applications

Makhoul

Broquetas

Rodon

et al. 2015

IEEE Trans. Geosci. Remote Sensing

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Abstract-This paper proposes a new optimized multichannel synthetic aperture radar (SAR) configuration, based on receiving antennas with non-uniformly displaced phase centers, intended for ground moving target indication (GMTI) applications over maritime scenarios. This system is compared with current SAR missions, such as TerraSAR-X (TSX) or TanDEM-X (TDX). The GMTI capabilities of the different configurations are analyzed in a two-level performance approach. First, an intensive numerical simulation evaluation, based on Monte Carlo (MC) trials, is carried out in order to characterize the probabilities of detection under different system parameters as well as scenario conditions. Different GMTI techniques, displaced phase center antenna (DPCA), along-track interferometry (ATI) and extended displaced phase center antenna (EDPCA), are assessed. In a second step, synthetic simulated SAR data, obtained in a study case scenario, is used to demonstrate the potential improvement of the proposed multichannel configuration compared to current SAR missions, providing subclutter visibility for maritime surveillance of small and slowly moving boats.Index Terms-Synthetic aperture radar (SAR), ground moving target indication (GMTI), displaced phase center antenna (DPCA), along-track interferometry (ATI), extended DPCA (ED-PCA), constant false alarm rate (CFAR) detector, Monte Carlo (MC) simulations, SAR raw data simulation.

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Section: Introductionmentioning

confidence: 99%

A Performance Evaluation of SAR-GMTI Missions for Maritime Applications

Makhoul

Broquetas

Rodon

et al. 2015

IEEE Trans. Geosci. Remote Sensing

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“…A rendering of the spacecraft in orbit is shown in Figure 1. The operational approach to the mission has been to be more proactive than reactive; a constant effort is made to improve performance and mitigate risks before they materialize [2]. As a result several enhancements have been made to both the spacecraft and the ground segment over the years.…”

Section: Introductionmentioning

confidence: 99%

10 Years of RADARSAT-2 Operations - Challenges and Improvements

Lambert

Chabot

Rolland

2018

2018 SpaceOps Conference

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RADARSAT-2 is a radar Earth observation spacecraft that has been operated for over ten years. It continues to perform extremely well and exceeds many of its design requirements. The system availability has been maintained at a high level thanks to careful system monitoring and continuously improving operational processes. This paper will summarize the RADARSAT-2 mission in terms of performance history and operational approach. Attention will be given to the major challenges faced during the mission, and improvements made to operational strategies and tools. The operations team has continually adapted their approach to deal with both impending and anticipated challenges. Several specific examples including debris avoidance, orbit determination, major anomalies, and star tracker recalibration will be presented in detail.

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“…COSMO-SkyMed, for example, is a four-satellite constellation equipped with SAR sensors that are able to satisfy each User Request 1 within 72 h in normal conditions (routine mode), 36 h in crisis mode, and 18 h during emergencies (urgent mode) [9]. Moreover, other SAR sensors are in orbit such as the German TerraSAR-X/Tandem-X [10], the Canadian RADARSAT-2 [11], and the European Union's Sentinel-1 [12]. Many others are currently under design and likely to be launched soon or in the next couple of years (NovaSAR-S, SAOCOM, and ALOS-2).…”

Section: Introductionmentioning

confidence: 99%

Flooding Water Depth Estimation With High-Resolution SAR

Iervolino

Guida

Iodice

et al. 2015

IEEE Trans. Geosci. Remote Sensing

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Abstract-The retrieval of flooding levels with high-resolution (HR) synthetic aperture radar (SAR) images is presented in this paper. A new framework is proposed. It is based on the inversion of theoretical scattering models initially developed for nonflooded urban areas and here adapted to the flooding case. Starting from the theory, two possible retrieval approaches have been developed and are the main topic of this paper: two possible retrieval approaches have been developed and are the main topic of this paper: the local Single Image Objects Aware (SIObA) and the global Two Image Area Aware (TIArA). These two approaches are conceived to be applicable under different working conditions and consequently holding different properties and reliability. For each of them, a different algorithm is derived and tested, and the retrieval results are validated on a meaningful data set of HR TerraSAR-X images relevant to the Gloucestershire (U.K.) flooding that occurred in year 2007.

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RADARSAT-2 initial system operations and performance

Cited by 7 publications

References 1 publication

A Performance Evaluation of SAR-GMTI Missions for Maritime Applications

A Performance Evaluation of SAR-GMTI Missions for Maritime Applications

10 Years of RADARSAT-2 Operations - Challenges and Improvements

Flooding Water Depth Estimation With High-Resolution SAR

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