Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- CubeSat (2)
- IA - Human Correlation (2)
- Small Spacecraft (2)
- Spacecraft Communications (2)
- 3D Scanning (1)
-
- AE - Algorithms (1)
- Communication System (1)
- Constellation (1)
- CubeSat radio (1)
- Electrical design (1)
- Electrical systems (1)
- Emission signature; PTR-MS; GC/MS; Perceived air quality; Volatile organic compound (1)
- Lighting impact (1)
- Material emission signature; PTR-MS; VOC; Sourceidentification; Signal processing (1)
- Open Orbiter Project (1)
- Radio design (1)
- Small Satellite (1)
- Software Defined Radio (1)
- Software Defined Radio (SDR) (1)
- Space 3d scanning (1)
- Space Mission Design (1)
- Publication
Articles 1 - 5 of 5
Full-Text Articles in Signal Processing
Small Satellite Communication System Creation At The University Of North Dakota, Michael Hlas, Jeremy Straub, Ronald Marsh
Small Satellite Communication System Creation At The University Of North Dakota, Michael Hlas, Jeremy Straub, Ronald Marsh
Jeremy Straub
Software defined radios (SDRs) are poised to significantly enhance the future of small spacecraft communications. They allow signal processing to be performed on a computer by software rather than requiring dedicated hardware. The OpenOrbiter SDR (discussed in [1] and refined in [2]) takes data from the flight computer and converts it into an analog signal that is transmitted via the spacecraft antenna. Because the signal processing is done in software, the radio can be easily reconfigured. This process is done in reverse for incoming transmissions, which are received by the SDR and decoded by software. Figures 1 and 2 provide …
A Low-Cost Radio For An Open Cubesat, Michael Wegerson, Jeremy Straub, Ronald Marsh
A Low-Cost Radio For An Open Cubesat, Michael Wegerson, Jeremy Straub, Ronald Marsh
Jeremy Straub
The OpenOrbiter small spacecraft development program aims to develop a template that can be used by colleges and universities world-wide to ‘jumpstart’ their own CubeSat development program. It is doing this through the development of designs (and implementations to test the designs functionality) of all basic CubeSat subsystems. A CubeSat can prospectively perform elements of a mission that would otherwise have required the development and deployment of a multi-million dollar satellite, thus, interest in CubeSats in industry and government is strong as well. The Open Prototype for Educational Nanosats (OPEN) design being produced by the OpenOrbiter program may, thus, be …
Using A Constellation Of Cubesats For In-Space Optical 3d Scanning, Jeremy Straub
Using A Constellation Of Cubesats For In-Space Optical 3d Scanning, Jeremy Straub
Jeremy Straub
The assessment of in-space objects is an area of ongoing research. Characterization of resident space objects (RSOs) can be useful for assessing the operating status of operator-affiliated or non-affiliated space assets, identifying unknown objects or gathering additional details for known objects. Under the proposed approach, a ring-like constellation of CubeSats passes around the target (at a distance) collecting imagery. This imagery is then utilized to create a 3D model of the target. This paper considers several key elements of a constellation to perform this type of imaging, including the constellation design and imaging capabilities required and the astrodynamics relevant to …
Development Of A Novel Methodology For Indoor Emission Source Identification, Kwanghoon Han
Development Of A Novel Methodology For Indoor Emission Source Identification, Kwanghoon Han
Kwanghoon Han
The objective of this study was to develop and evaluate a methodology to identify individual sources of emissions based on the measurements of mixed air samples and the emission signatures of individual materials previously determined by Proton Transfer Reaction-Mass Spectrometry (PTR-MS), an on-line analytical device. The methodology based on signal processing principles was developed by employing the method of multiple regression least squares (MRLS) and a normalization technique. Samples of nine typical building materials were tested individually and in combination, including carpet, ceiling material, gypsum board, linoleum, two paints, polyolefine, PVC and wood. Volatile Organic Compound (VOC) emissions from each …
Determination Of Material Emission Signatures By Ptr-Ms And Their Correlations With Odor Assessments By Human Subjects, Kwanghoon Han
Determination Of Material Emission Signatures By Ptr-Ms And Their Correlations With Odor Assessments By Human Subjects, Kwanghoon Han
Kwanghoon Han
The objectives of this study were to determine volatile organic compound (VOC) emission signatures of nine typical building materials by using proton transfer reaction-mass spectrometry (PTR-MS) and to explore the correlation between the PTR-MS measurements and the measurements of acceptability by human subjects. VOC emissions from each material were measured in a 50-l small-scale chamber. Chamber air was sampled by PTR-MS to determine emission signatures. Sorbent tube sampling and TD-GC/MS analysis were also performed to identify the major VOCs emitted and to compare the resulting data with the PTR-MS emission signatures. The data on the acceptability of air quality assessed …