Design and performance of a signal process system for spaceborne multi-spectral imaging spectrometer covering VIS to LWIR

Liqun Dai; Xu Zhang II; Lina Xu III; Jianyong Zhou IV

doi:10.1117/12.2500528

9 November 2018 Design and performance of a signal process system for spaceborne multi-spectral imaging spectrometer covering VIS to LWIR

Liqun Dai, Xu Zhang II, Lina Xu III, Jianyong Zhou IV

Author Affiliations +

Proceedings Volume 10826, Infrared, Millimeter-Wave, and Terahertz Technologies V; 108260M (2018) https://doi.org/10.1117/12.2500528
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

Signal process system composed of visible information process circuit and infrared information process circuit is applied in a space-born multi-spectral Sensor. Based on pushbroom image, the system with external synchronization completes driving and signal processing of detectors including visible, short-wave and middle-wave infrared as well as long-wave infrared. Sampling and processing of analog signal along with integration and format of digital signal are also completed in the system. Multi FPA(focal plane array) synchronization, large number of analog outputs, high signal to noise ratio are characteristics of the systems. Eventually, the system samples 32 analog video signals and outputs 14bit data by 5 serial LVDS channels with a 30Mbps transmission rate in single channel. Under given test condition in laboratory, the results indicate that the SNRs of visible and short-wave infrared channel are 307 and 422, meanwhile the NETDs of middle-wave and long-wave infrared channel are 0.14K and 0.16K. An imaging experiment in VIS channel acquired good image data. The regular test and imaging experiment results validate that the system can meet the demands of multi-spectral sensor application.

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Liqun Dai, Xu Zhang II, Lina Xu III, and Jianyong Zhou IV "Design and performance of a signal process system for spaceborne multi-spectral imaging spectrometer covering VIS to LWIR", Proc. SPIE 10826, Infrared, Millimeter-Wave, and Terahertz Technologies V, 108260M (9 November 2018); https://doi.org/10.1117/12.2500528

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KEYWORDS

Signal processing

Sensors

Data processing

Analog electronics

Signal detection

Infrared radiation

Charge-coupled devices

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