Article Figures & Data
Figures
- FIGURE 1
The BRIC flight management computer functional block diagram
- FIGURE 2
The BRIC flight management computer hardware that operates NCL HAB missions including navigation, communication, thermal management, and data logging
- FIGURE 3
Hardware-in-the-loop testing of the BRIC flight computer; shown here is a GPS simulator running through a multi-day representative flight trajectory.
- FIGURE 4
Custom browser-based ground station interface for balloon mission management; Iridium satellite connectivity allowed for command and control from anywhere in the world.
- FIGURE 5
Ground station telemetry during flight including the position, battery voltage, internal/external temperatures, and equipment current draw
- FIGURE 6
The GROOT system; a SwiftNav Piksi Multi recorded RO measurements, a Trimble BX992 generated precise position and velocity, and the data was logged to a RPi computer.
- FIGURE 7
The GROOT-RO instrument functional block diagram
- FIGURE 8
3D rendering of the AIRO instrument based on the mosaicHat and Raspberry Pi 4
- FIGURE 9
Completed functional prototype of the AIRO instrument
- FIGURE 10
King Air research aircraft at the University of Wyoming
- FIGURE 11
Instrumentation setup in the King Air research aircraft; this shows several data collection systems in which the GROOT system was only a 1U form factor in the equipment rack.
- FIGURE 12
World View stratollite; the NCL GNSS-RO instrument was a hosted payload on the bottom face.
- FIGURE 13
World View zero-pressure balloon on launch day being filled with helium
- FIGURE 14
The NCL Zero-Pressure Balloon Mission (ZPM-1) payload
- FIGURE 15
NCL Zero-Pressure Balloon Mission (ZPM-1) launch preparations
- FIGURE 16
The NCL Zero-Pressure Balloon Mission (ZPM-1) balloon filling
- FIGURE 17
The NCL Zero-Pressure Balloon Mission (ZPM-1) trajectory
- FIGURE 18
The NASA DC-8 research aircraft
- FIGURE 19
GNSS-RO data pre-processing workflow
- FIGURE 20
An end-to-end processing system for airborne/balloon-borne GNSS RO-simulation, retrieval, and evaluation
- FIGURE 21
Sankey plot of RO data quality collected during the World View 5-day mission
- FIGURE 22
The G32 balloon-borne RO recorded August 22, 2020; (Top-left) the excess phase and (top-right) excess Doppler and simulation; (bottom-left) the L1 SNR and (bottom-right) the bending angle profiles from simulation (green), GO retrieval (blue), and FSI retrieval (purple)
- FIGURE 23
Median refractivity bias between World View balloon retrievals and the standard ERA5 model; median biases were within 5% for the majority of the profile
- FIGURE 24
GNSS-RO soundings recorded on a 5-day high-altitude balloon flight
- FIGURE 25
GNSS-RO soundings (with ray paths in black) collected by the AIRO system from the NASA DC-8 flight test campaign, which coincided with Hurricane Ida (purple) in August 2021.
Tables
Platform Number of Flights Total Hours Beechcraft King Air Research Aircraft (Univ. of Wyoming) 7 21 World View Long Duration Balloon 2 120 Night Crew Labs Zero Pressure Balloon 1 12
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