Transfer of Hyperspectral Video Data of Earth Remote Sensing via Radio Channels of Limited Capacity
Abstract
Introduction: Simultaneous use of hyperspectral imagery in hundreds of spectral channels is a steady tendency in the development of space systems for Earth remote sensing. It leads to anticipating growth of the informativeness of onboard optical-electronic observation systems in relation to the capacity of radio channels of information transfer from the spacecrafts. The problem is that the modern radio engineering information transmission systems with limited throughput cannot transfer complete volumes of registered hyperspectral video data either by direct operational transmission or by reproduction from an onboard storage device. It is necessary to develop technologies for the abbreviation (compression) of a hyperspectral video data flow for its transmission to ground stations of information reception, using satellite radio engineering information transmission systems with limited throughput. Results: The analysis of information productivity of the existing onboard hyperspectral optical-electronic systems showed that it reaches gigabits per second and will increase in the long term. At the same time, the throughput of radio channels of video data transmission from spacecrafts, taking into account the opportunities of the used frequency ranges and technical restrictions, does not exceed several hundred megabits per second. To reduce the transmitted data amount, we suggest to share the algorithms of video data shrinking in each spectral channel and choose only several most informative spectral channels out of all the registered hyperspectral video data. This will reduce the transmitted data amount in several tens times and coordinate the information productivity of optical-electronic observation systems with the throughput of the radio channels. Achievable compression ratios are defined for hyperspectral video data when sharing different compression methods and methods of choosing the most informative spectral channels. Practical relevance: The obtained results can be applied in the design and use of space systems of Earth remote sensing with hyperspectral shooting for choosing technologies and modes to transmit the spacecraft observation data via radio channels of limited capacity.Published
2016-04-21
How to Cite
Maltsev, G., & Kozinov, I. (2016). Transfer of Hyperspectral Video Data of Earth Remote Sensing via Radio Channels of Limited Capacity. Information and Control Systems, (2), 74-83. https://doi.org/10.15217/issn1684-8853.2016.2.74
Issue
Section
Information channels and medium