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HAPS: Potentials, Applications and Requirements for Radar Remote Sensing

Baumgartner, Stefan V. and Scheiber, Rolf and Bordoni, Federica and Krieger, Gerhard and Peichl, Markus (2017) HAPS: Potentials, Applications and Requirements for Radar Remote Sensing. HAPS4ESA - Towards an ESA Stratospheric High Altitude Pseudo-Satellites (HAPS) programme for Earth Observation, Telecommunications and Navigation, 2017-10-09 - 2017-10-10, Noordwijkerhout, The Netherlands.

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High Altitude Pseudo-Satellites (HAPS) are future platforms flying in the stratosphere. Owing to the expected long endurance, missions lasting for several weeks, months or even years are possible. This property makes HAPS very attractive as carrier platforms for remote sensing instruments. HAPS allow for short revisiting times or even for continuous observations, e.g., by performing circular flight tracks over the region of interest. Such an operating mode is not feasible with satellites and is also not realizable economically with state-of-the-art aircraft platforms over longer time frames. We focus on a synthetic aperture radar (SAR) as HAPS payload. The SAR principle ensures high resolution down to the sub-meter range independently from the flight altitude, weather conditions and sunlight illumination. Due to the side-looking radar imaging geometry also hazard areas can be monitored safely since the platform is not only separated in altitude, but additionally separated horizontally several kilometers far away from the scene center. In 2015 we have carried out a study for Airbus Defence and Space to investigate if it is feasible to bring and operate a SAR sensor on their solar-powered Zephyr HAPS platform. In the study we found that the two main platform restrictions, the limited payload weight and the limited available electrical power, can be overcome. For instance, a peak transmit power of 50 W at a duty cycle of 20 % is sufficient for obtaining high-quality SAR images with resolutions <1 m at X-band with a swath width of 25 km, acquired from a flight altitude of 20 km. In our talk we will give a detailed overview of the potentials and applications of HAPS-SAR. We will show the achievable SAR imaging and moving target detection performances of an exemplary radar designed for platforms like the Zephyr HAPS. One important point in the talk will be the requirements on the onboard navigation system, which are crucial for obtaining high-quality (circular) SAR images.

Item URL in elib:https://elib.dlr.de/113651/
Document Type:Conference or Workshop Item (Poster)
Title:HAPS: Potentials, Applications and Requirements for Radar Remote Sensing
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Baumgartner, Stefan V.UNSPECIFIEDhttps://orcid.org/0000-0002-8337-6825UNSPECIFIED
Scheiber, RolfUNSPECIFIEDhttps://orcid.org/0000-0002-6833-4897UNSPECIFIED
Bordoni, FedericaUNSPECIFIEDhttps://orcid.org/0000-0001-9908-8775UNSPECIFIED
Krieger, GerhardUNSPECIFIEDhttps://orcid.org/0000-0002-4548-0285UNSPECIFIED
Peichl, MarkusUNSPECIFIEDhttps://orcid.org/0000-0003-0226-9786UNSPECIFIED
Date:9 October 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:SAR, Synthetic Aperture Radar, HAPS, High Altitude Pseudo Satellites, Remote Sensing
Event Title:HAPS4ESA - Towards an ESA Stratospheric High Altitude Pseudo-Satellites (HAPS) programme for Earth Observation, Telecommunications and Navigation
Event Location:Noordwijkerhout, The Netherlands
Event Type:national Conference
Event Dates:2017-10-09 - 2017-10-10
Organizer:European Space Agency (ESA)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Traffic Management (old)
DLR - Research area:Transport
DLR - Program:V VM - Verkehrsmanagement
DLR - Research theme (Project):V - Vabene++ (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Baumgartner, Dr.-Ing. Stefan V.
Deposited On:10 Aug 2017 14:33
Last Modified:31 Jul 2019 20:11

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