Intelligent Onboard Processing and Multichannel Transmission Technology for Infrared Remote Sensing Data

According to the current main application mode of remote sensing satellites, users obtain the original image data, carries on the complex data processing, and get the required substantive content by filtering results after processing. The poor data timeliness, the large amount of data transmitted from satellite to ground, and the heavy workload of the ground processing system are main drawbacks of such modes. This article presents an intelligent onboard processing and multichannel transmission concept for infrared remote sensing satellites to solve above problems. Through applying cloud detection, fire spot detection, water pollution detection and other algorithms, infrared remote sensing data of the satellite payload is processed onboard, so that typical user-focused events with exact location information are discovered. The event information can be broadcast to the ground immediately through the short message channel of Chinese Beidou Navigation System, which is a real-time data transmission channel, so application users can quickly respond. In addition, there is a mid-speed data transmission channel for slicing images of areas of interest (AOI), as well as a high-speed data transmission channel for complete image data, to meet the needs of different users. In general, this article provides an overview of onboard information extraction and multichannel distribution for infrared remote sensing satellites, which can be used as a reference for satellite applications and engineering development.