12,099 research outputs found

    SS Northland Sun at Mirror Landing, AB

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    Photograph - The paddle-wheeler, SS Northland Sun, docked at shore in Mirror Landing, Albert

    Norway: SS Isbjörn Expedition 1872, midnight sun at Isbjörn Bay

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    Spitzbergen. - Mitternachtssonne in der Isbjören-Bai = Spitsbergen. Midnight sun at Isbjören BayArctic expedition in SS Isbjörn, 1872. Spitzbergen. Mitternachtssonne in der Isbjoren-Bai = Spitsbergen. Midnight sun at Isbjörn Bay

    RDLS-SS-DWT v. 0.9

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    This fileset contains the implementation of RDLS-DWT and SS-DWT in JPEG 2000 (RDLS-SS-DWT v. 0.9), which was used in a research described in: R. Starosolski, “Application of reversible denoising and lifting steps to DWT in lossless JPEG 2000 for improved bitrates,” Signal Processing: Image Communication, Vol. 39, Part A, pp. 249-63, DOI: 10.1016/j.image.2015.09.013, 2015 and R. Starosolski, “Skipping selected steps of DWT computation in lossless JPEG 2000 for improved bitrates,” submitted.   This software is intended for research purposes only; it is provided "as is"; author makes no warranty of any kind, either express or implied, with respect to this software. <br

    Algorithm Enhancements for the SS-411 Digital Sun Sensor

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    This paper discusses the evolution of the SS-411 series digital sun sensor. The earlier SS-256 and SS-330 models have proven themselves in orbit on low cost satellite missions. The SS-411 represents a further hardware revision with enhanced robustness and improved attitude estimation performance. To complement the latest hardware improvements, researchers in the Space Avionics and Instrumentation Laboratory (SAIL) at Ryerson University in Toronto have developed advanced signal processing routines compatible with the SS-411. These routines significantly improve the accuracy of the sensor\u27s estimation without increasing manufacturing complexity. With this advanced processing, the sensor maintains a mean accuracy of 0.16° over the entire field of view
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