星载微光遥感器外场辐射定标光源的研制和检测

HFCAS OpenIR

	星载微光遥感器外场辐射定标光源的研制和检测
其他题名	Design and test of in-site radiometric calibration reference light source for spaceborne low light level remote sensors
	2020
发表期刊	应用光学
ISSN	1002-2082
摘要	LED外场辐射定标积分球光源基于辐射通量等效理论,用于星载微光遥感器的在轨辐射定标。该定标光源采用12组峰值波长670 nm的LED密集阵列发光单元,每组最大电功率300 W,辐亮度输出达到5.2×10^-2 W·cm^-2·sr^-1,通过等效辐射通量面积校正后,能够适用于10^-9 W·cm^-2·sr^-1量级的微光通道在轨定标。光源的参数检测结果表明:定标光源角度均匀性在±30°以内优于99.6%,平面均匀性优于99.7%,1 h内稳定性优于99.9%,具有优良的辐射特性。在敦煌中国遥感卫星辐射校正场对VIIRS微光通道进行了在轨实测试验,在轨响应结果为8.27×10^-9 W·cm^-2·sr^-1(含月光贡献和大气影响),证明了该外场微光定标光源辐射量值设计的合理性。
其他摘要	Aiming at on-orbit radiation calibration of spaceborne low-light-level remote sensor, an out-site radiation(LED) light source based on the theory of radiation flux equivalence is designed. The designed calibration light source uses twelve 670 nm pick-wavelength LED modules, with each LED module max power dissipation of 300 W, and the max output radiance over 5.2×10^-2 W·cm^-2·sr^-1. Based on the calibrating area of equivalent radiation flux, it can be applied to the on-orbit calibration of low-light-level channels in the order of 10^-9 W·cm^-2·sr^-1. The test results show that the planar uniformity of the source is better than 99.7% at the exit port, the angular uniformity is better than 99.6% within ±30° to the exit normal, and the stability of source is better than 99.9% within 1 h. In-orbit test of the low-light-level channel of VIIRS was carried out at the radiation correction field of Dunhuang Chinese remote sensing satellite, on-orbit response results was 8.27×10^-9 W·cm^-2·sr^-1.(including moonlight contribution and atmospheric impact). The rationality of the design of the radiation value of the out-site low-light-level calibration light source proposed in this paper is proved.
关键词	微光遥感器参考光源辐射定标均匀性
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6661442
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/62089
专题	中国科学院合肥物质科学研究院
推荐引用方式 GB/T 7714	. 星载微光遥感器外场辐射定标光源的研制和检测[J]. 应用光学,2020,041.
APA	(2020).星载微光遥感器外场辐射定标光源的研制和检测.应用光学,041.
MLA	"星载微光遥感器外场辐射定标光源的研制和检测".应用光学 041(2020).