High-Altitude Balloon-Based Sensor System Design and Implementation

Wang, Zhanchao; Huang, Min; Qian, Lulu; Zhao, Baowei; Wang, Guangming

doi:10.3390/s20072080

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…Earth observation practices and technologies continue to change in scope and extent (Grainger 2017). From sensors and cameras on balloons (Wang et al 2020), to airplanes (Schleper 2021), satellites (Kramer, 2008), and drones (Getzin et al 2012), technologies of observation that are standard tools for military operations and humanitarian intervention are now pervasive in environmental analysis (Benson 2010). A range of state and civil society actors, including governments, academic researchers, militaries, and private organizations, monitor and manage environments with these devices.…”

Section: Observationmentioning

confidence: 99%

Reworking the political in digital forests: The cosmopolitics of socio-technical worlds

Gabrys

Westerlaken

Urzedo

et al. 2022

Progress in Environmental Geography

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Forests are increasingly central to policies and initiatives to address global environmental change. Digital technologies have become crucial components of these projects as the tools and systems that would monitor and manage forests for storing carbon, preserving biodiversity, and providing ecosystem services. Historically, technologies have been instrumental in forming forests as spaces of conservation, extraction, and inhabitation. Digital technologies build on previous techniques of forest management, which have been shaped by colonial governance, expert science, and economic growth. However, digital technologies for achieving environmental initiatives can also extend, transform, and disrupt these sedimented practices. This article asks how the convergence of forests and digital technologies gives rise to different socio-technical formations and modalities of “political forests.” Through an analysis of five digital operations, including 1) observation, 2) datafication, 3) participation, 4) automation, and 5) regulation and transformation, we investigate how the co-constitution of forests, technologies, subjects, and social life creates distinct materializations of politics–and cosmopolitics. By building on and expanding the concept of cosmopolitics, we query how the political is designated through digital forest projects and how it might be reworked to generate less extractive environmental practices and relations while contributing to more just and pluralistic forest worlds.

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Section: Observationmentioning

confidence: 99%

Reworking the political in digital forests: The cosmopolitics of socio-technical worlds

Gabrys

Westerlaken

Urzedo

et al. 2022

Progress in Environmental Geography

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“…Near space generally refers to the space between 20 km and 100 km above the ground. The atmosphere in the adjacent space is thin, and the influence of water vapor, atmospheric refraction, and scattering on optical observation is very small, and it is very suitable for wide area surveillance [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Near-Space Wide-Area and High-Resolution Imaging System Design and Implementation

Wang

Huang

Qian

et al. 2023

Sensors

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The near-space atmosphere is thin, and the atmospheric refraction and scattering on optical observation is very small, making it very suitable for wide-area and high-resolution surveillance using high-altitude balloon platforms. This paper adopts a 9344 × 7000 CMOS sensor to obtain high-resolution images, generating large-field-of-view imaging through the swing scanning of the photoelectric sphere and image stitching. In addition, a zoom lens is designed to achieve flexible applications for different scenarios, such as large-field-of-view and high-resolution imaging. The optical design results show that the camera system has good imaging quality within the focal length range of 320 mm–106.7 mm, and the relative distortion values at different focal lengths are less than 2%. The flight results indicate that the system can achieve seamless image stitching at a resolution of 0.2 m@20 km and the imaging field of view angle exceeds 33°. This system will perform other near-space flight experiments to verify its ultra-wide (field of view exceeding 100°) high-resolution imaging application.

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“…This means that emphasis was put on developing a resonator design that could be made to support an arbitrary range of strains through the selection of an appropriate substrate material. Applications for sensors of this type include aerospace structures such as those outlined in [ 2 , 3 ]. These applications and others will require varying strain sensing requirements.…”

Section: Introductionmentioning

confidence: 99%

Proof of Concept Novel Configurable Chipless RFID Strain Sensor

Gee

Anandarajah

Collins

2021

Sensors

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This paper contains two main areas of research: First, this work outlines a novel, highly sensitive strain sensor design that should support various levels of deformation, depending on the substrate type used. Physical implementations in this work have focused on proving its large deformation capabilities, and simulations have been used to assess its more general electromagnetic response. The other part of this paper focusses on exploring other effects that will impact the sensing of strain of resolutions below 10 με, which is a capability achieved by other aerospace-grade strain sensor technologies. These effects are limited to mechanical swelling and sensor orientation in the azimuth and elevation planes, as these appear to be unexplored and highly relevant issues to the topic of chipless RFID-based strain sensing. From this exploration, it is apparent that the effects of mechanical swelling and sensor orientation (amongst others) will need to be addressed in any real-life implementation of the sensor, requiring a strain resolution below 10 με.

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High-Altitude Balloon-Based Sensor System Design and Implementation

Cited by 5 publications

References 14 publications

Reworking the political in digital forests: The cosmopolitics of socio-technical worlds

Reworking the political in digital forests: The cosmopolitics of socio-technical worlds

Near-Space Wide-Area and High-Resolution Imaging System Design and Implementation

Proof of Concept Novel Configurable Chipless RFID Strain Sensor

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