Fast compression implementation for hyperspectral sensor

Hihara, Hiroki; Yoshida, Jun; Ishida, Juro; Takada, Jun; Senda, Yuzo; Seki, Taeko; Ichikawa, Satoshi; Ohgi, Nagamitsu

doi:10.1117/12.869521

Cited by 6 publications

(7 citation statements)

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“…A signal processing module is connected to sensor interfaces through SpaceWire 8 protocol and RMAP (Remote Memory Access Protocol) 9 in order to provide deterministic processing time. Data compression is also provided to reduce restriction on storage capacity and operation time, which provides the equivalent compression ratio as JPEG2000 10 in 1/30 processing time in average 11,12,13 . The signal processing functions implemented onboard are shown in Table 5.…”

Section: Onboard Signal Processing Systemmentioning

confidence: 99%

“…In consequence, complete dual standby redundancy for ONC-E has been realized against the resource limitation of deep space mission. StarPixel® is intended for natural image compression 11,12,13 , and its compression algorithm is focused on its purpose in order to accelerate processing speed. Compression ratio is close to JPEG2000 10 , on the other hand its lossless compression speed is 30 times faster than JPEG2000 in average for typical images expected during HAYABUSA2 mission.…”

Section: Onboard Signal Processing Systemmentioning

confidence: 99%

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Onboard infrared signal processing system for asteroid sample return mission HAYABUSA2

et al. 2014

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Onboard signal processing system for infrared sensors has been developed for HAYABUSA2 for the exploration of C class near-Earth asteroid 162173 (1999JU3), which is planned to be launched in 2014. An optical navigation camera with telephoto lens (ONC-T), a thermal-infrared imager (TIR), and a near infrared spectrometer (NIRS3) have been developed for the observation of geology, thermo-physical properties, and organic or hydrated materials on the asteroid. ONC-T and TIR are used for those scientific purposes as well as assessment of landing site selection and safe descent operation onto the asteroid surface for sample acquisition. NIRS3 is used to characterize the mineralogy of the asteroid surface by observing the 3-micron band, where the particular diagnostic absorption features due to hydrated minerals appear.Since the processing cycle of these sensors are independent, data processing, formatting and recording are processed in parallel. In order to provide the functions within the resource limitation of deep space mission, automatic packet routing function is realized in one chip router with SpaceWire standard. Thanks to the SpaceWire upper layer protocol (remote memory access protocol: RMAP), the variable length file system operation function can be delegated to the data recorder from the CPU module of the digital electronics of the sensor system. In consequence the infrared spectrometer data from NIRS3 is recorded in parallel with the infrared image sensors. High speed image compression algorithm is also developed for both lossless and lossy image compression in order to eliminate additional hardware resource while maintaining the JPEG2000 equivalent image quality.

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Section: Onboard Signal Processing Systemmentioning

confidence: 99%

Section: Onboard Signal Processing Systemmentioning

confidence: 99%

Onboard infrared signal processing system for asteroid sample return mission HAYABUSA2

et al. 2014

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“…The primitives of image recognition functions are implemented as hardware. On the other hand image compression functions are implemented as software, because its processing speed is fast enough by accommodating StarPixel® 18,19,20 .…”

Section: Robotics Technology For Automatic and Autonomous Operationmentioning

confidence: 99%

Infrared sensor system using robotics technology for inter-planetary mission

Hihara¹,

Takano

Sano³

et al. 2015

SPIE Proceedings

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Infrared sensor system is a major concern for inter-planetary missions in order to investigate the nature and the formation processes of planets and asteroids. Since it takes long time for the communication of inter-planetary probes, automatic and autonomous functions are essential for provisioning observation sequence including the setup procedures of peripheral equipment. Robotics technology which has been adopted on HAYABUSA2 asteroid probe provides functions for setting up onboard equipment, sensor signal calibration, and post signal processing. HAYABUSA2 was launched successfully in 2014 for the exploration of C class near-Earth asteroid 162173 (1999JU3). An optical navigation camera with telephoto lens (ONC-T), a thermal-infrared imager (TIR), and a near infrared spectrometer (NIRS3) have been developed for the observation of geology, thermo-physical properties, and organic or hydrated materials on the asteroid. ONC-T and TIR are used for those scientific purposes as well as assessment of landing site selection and safe descent operation onto the asteroid surface for sample acquisition. NIRS3 is used to characterize the mineralogy of the asteroid surface by observing the 3-micron band, where the particular diagnostic absorption features due to hydrated minerals appear.Modifications were required in order to apply robotics technology for the probe due to the difference of operation on satellites from robot operation environment. The major difference is time line consideration, because the standardized robotics operation software development system is based on event driven framework. The consistency between the framework of time line and event driven scheme was established for the automatic and autonomous operation for HAYABUSA2.

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“…Since data size of the hyper spectral sensor is huge because of its 186 spectral bands, on-board binning system and data compression system [6] in digital domain at HELU are considered. Detector pixels (called sub-pixels) are binned in spectral direction, over 4 pixels in VNIR case and over 2 pixels in SWIR case, in order to produce unity image pixel.…”

Section: Signal Processormentioning

confidence: 99%

The functional evaluation model for the on-board hyperspectral radiometer

et al. 2010

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The hyper-multi spectral mission named HISUI (Hyper-spectral Imager SUIte) is the next Japanese earth observation project that will be on board ALOS-3 satellite. This project is the follow up mission of the Advanced Spaceborne Thermal Emission and reflection Radiometer (ASTER). HISUI is composed of hyperspectral radiometer with higher spectral resolution and multi-spectral radiometer with higher spatial resolution. The functional evaluation model is under development to confirm the spectral and radiometric performance prior to the flight model manufacture phase. This model contains the VNIR and SWIR spectrograph, the VNIR and SWIR detector assemblies with a mechanical cooler for SWIR, signal processing circuit and on-board calibration source.

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Fast compression implementation for hyperspectral sensor

Cited by 6 publications

References 0 publications

Onboard infrared signal processing system for asteroid sample return mission HAYABUSA2

Onboard infrared signal processing system for asteroid sample return mission HAYABUSA2

Infrared sensor system using robotics technology for inter-planetary mission

The functional evaluation model for the on-board hyperspectral radiometer

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