CN102003995B - Imaging spectrometer calibration device - Google Patents

Imaging spectrometer calibration device Download PDF

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CN102003995B
CN102003995B CN 201010284500 CN201010284500A CN102003995B CN 102003995 B CN102003995 B CN 102003995B CN 201010284500 CN201010284500 CN 201010284500 CN 201010284500 A CN201010284500 A CN 201010284500A CN 102003995 B CN102003995 B CN 102003995B
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calibration
diffuse reflection
scaling
mirror
imaging spectrometer
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CN 201010284500
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CN102003995A (en
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何志平
吕刚
沈渊婷
王建宇
舒嵘
贾建军
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中国科学院上海技术物理研究所
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Abstract

The invention discloses an imaging spectrometer calibration device, which comprises a calibration device supporting seat, a diffuse reflection calibration plate, a diffuse reflection calibration plate driving mechanism, a reflector and a reflector driving mechanism. The diffuse reflection calibration plate driving mechanism drives the diffuse reflection calibration plate to rotate; when the diffuse reflection calibration plate rotates to the horizontal direction, sunlight is transmitted onto the diffuse reflection calibration plate and is reflected to enter an imaging spectrometer main optical system through the reflector so as to realize the light spectrum and radiation calibration function; and when the diffuse reflection calibration plate rotates to the downwards vertical direction, a ground object enters an imaging spectrometer through the reflector so as to enter an imaging state, and the reflector driving mechanism can drive the reflector to rotate so as to realize different imaging viewing angles. When the diffuse reflection calibration plate, the reflector and the calibration device supporting seat are closed, the imaging spectrometer is positioned in a dustproof and heat-insulating state. The invention has the characteristics that: the calibration device is compact in structure and has calibrating, imaging, dustproof and heat-insulating functions.

Description

一种成像光谱仪定标装置 An imaging spectrometer scaling means

技术领域: FIELD:

[0001] 本发明涉及一种成像光谱仪,特别涉及一种成像光谱仪上的定标装置,它用于成像光谱仪的光谱及辐射定标。 [0001] The present invention relates to an imaging spectrometer, and particularly relates to a calibration device imaging spectrometer, which is used to scale the spectral and radiometric imaging spectrometer.

背景技术: Background technique:

[0002] 成像光谱仪可获取目标大量窄波段连续光谱图像,为了使获得的信息具有真实可靠性,需要作定标校准。 [0002] The imaging spectrometer can get a lot of narrowband continuous-spectrum target image, in order to make the authenticity of the information obtained has, as required scaling calibration. 但是,成像光谱仪虽然在实验室进行过定标校准,一旦进入工作环境,由于所处的环境状况发生较大的变化以及随着时间的推移而受到不同程度的污染和老化,探测器的响应率或多或少都会发生一些变化,从而使获取的信息真实性受到影响,特别是对于星载成像光谱仪而言,一旦发射就不可能重新在实验室进行定标。 However, although the imaging spectrometer calibration been calibrated in the laboratory, once into the working environment, due to the large changes in the environment and conditions occurs over time subject to different degrees of pollution response rates and aging, the detector more or less will be some changes, so that the authenticity of the information obtained is affected, especially for spaceborne imaging spectrometer, once it is impossible to re-launch calibration in the laboratory. 为了解决这个问题,一般采取在仪器内加装定标装置的方法对仪器进行实时定标校准。 To solve this problem, in general, the installation method in the instrument calibration device for real-time calibration instrument calibration.

[0003] 实时定标装置通常使用定标灯或太阳光作为光源。 [0003] Real-time scaling means scaling generally used as the light source lamp or sunlight. 定标灯作光源随着环境变化和时间的推移,其输出不可避免的要发生改变;使用太阳光作为光源,也存在太阳高度角变化导致的定标误差问题,但只要监测定标时的太阳高度角及仪器位置姿态,就可以使用太阳光作为定标光源。 Calibration lamp as the light source over time and environmental changes, it is inevitable to change the output; using sunlight as a light source, there are also scaling error problem caused by changes in solar altitude angle, but as long as the sun when scaling monitor angular position of the instrument height and posture, can be used as a calibration source sunlight.

[0004] 成像光谱仪工作时,如果成像光谱仪能够选择成像角度,则可提高仪器探测的能力。 [0004] When the imaging spectrometer work, if the imaging angle of the imaging spectrometer can be selected, can improve the ability of the instrument to detect. 因此,具备光路转折的定标装置,可实现成像谱仪的多角度观测,以最大限度的发挥成像光谱仪的探测能力。 Thus, the scaling means includes a light path turning, enabling multi-angle imaging spectrometer observations, to maximize the ability to detect imaging spectrometer.

[0005] 成像光谱仪在灰尘悬浮及温度极端变化的恶劣环境中工作时,悬浮于空中大量的灰尘颗粒,会对仪器产生污染。 [0005] When the imaging spectrometer working in extreme changes in temperature and harsh environment of dust suspended in the air suspended in a large amount of dust particles, the instrument will produce pollution. 温差较大时,会产生热应力,破坏仪器热平衡,影响仪器的性能稳定。 When the temperature difference is large, thermal stress is generated, destruction of the heat balance instruments, stable performance impact of the instrument. 所以定标装置还需具有防尘与隔热功能,以防止成像光谱仪受到灰尘污染,并减小温变带来的影响。 Therefore, scaling means having a dust-proof and thermal insulation needed to prevent contamination from dust imaging spectrometer, and to reduce the influence caused by temperature change. 另外,为使成像光谱仪自身结构轻小型化,要求定标装置结构紧凑且功能完备。 Furthermore, to make its structure lighter imaging spectrometer miniaturization, scaling compact apparatus configuration requires full function.

发明内容: SUMMARY:

[0006] 本发明目的是设计一种结构紧凑、轻小的定标装置。 Objective [0006] The present invention is to design a compact, light small scaling means. 利用漫反射定标板引入太阳光作为光源将光谱及辐射定标装置合二为一,满足成像光谱仪实时光谱及辐射定标要求, 且可实现多角度观测,同时具有防尘与隔热功能。 The diffuse reflection plate incorporated scaling sunlight as a light source and spectral radiometric calibration device combined to meet the real-time spectral imaging spectrometer and radiometric calibration requirements, and can realize multi-angle observation, while the dust-proof and thermal insulation. 本发明特别适用于月面环境中月球巡视器载成像光谱仪的定标、多角度成像、防尘与隔热需求。 The present invention is particularly applicable to lunar environments Moon Patroller Airborne Imaging Spectrometer calibration, multi-angle image, dust and heat demand.

[0007] 综上所述,如何在一种装置上解决光谱及辐射定标、多角度观测、防尘与隔热的需求,做到装置的轻小紧凑,是本发明所要解决的技术问题。 [0007] In summary, an apparatus on how to resolve the spectral and radiometric calibration, multi-angle observation, dust and heat demand, so that a light and compact device, the present invention is a technical problem to be solved.

[0008] 具体发明如附图1〜3所示 [0008] In particular the invention as shown in figures 1 ~ 3

[0009] 1、成像光谱仪定标装置由漫反射定标板2、漫反射定标板驱动机构3、反射镜4、反射镜驱动机构5及定标装置支座1组成。 [0009] 1, imaging spectrometer by the scaling means scaling diffusely reflecting plate 2, diffusely reflecting calibration plate drive mechanism 3, a mirror 4, a mirror drive mechanism 5 and the carrier 1 composed scaling means.

[0010] 2、漫反射定标板驱动机构3带动漫反射定标板2转动。 [0010] 2, diffusely reflecting calibration plate 3 is rotated with the driving mechanism 2 calibration animation reflecting plate. 漫反射定标板2处于水平方向时,成像光谱仪进入定标状态。 When scaling diffuse reflection plate 2 in a horizontal direction, into the imaging spectrometer calibration state. [0011] 3、漫反射定标板2处于竖直向下时,成像光谱仪进入成像状态,反射镜驱动机构5 带动反射镜4转动,实现不同角度观测。 [0011] 3, the diffuse reflection plate 2 when in the calibration vertically downward, into the imaging state imaging spectrometer, the drive mechanism 5 to drive the mirror rotating mirror 4, to achieve different observation angles.

[0012] 4、漫反射定标板2与反射镜4及定标装置支座1闭合时,为防尘与隔热状态。 [0012] 4, when scaling diffuse reflection mirror 4 plate 2 and the scaling means and the support 1 is closed, and the dust is insulated state.

[0013] 本发明的特点在于: [0013] The features of the present invention:

[0014] 1)本发明将光谱及辐射定标装置合二为一,满足了仪器光谱及辐射定标轻小型化的要求; [0014] 1) of the present invention, spectral and radiometric calibration device combined to meet the miniaturization of the instrument and the spectrum requires radiometric calibration of the light;

[0015] 2)本发明利用漫反射驱动机构带动漫反射定标板转动以实现定标、成像、防尘与隔热多项功能,结构紧凑、设计巧妙; [0015] 2) The present invention utilizes diffuse reflection tape drive mechanism animation reflecting plate rotated to achieve calibration scaling, image, dust and heat a number of functions, compact, ingenious design;

[0016] 3)本发明利用反射镜驱动机构带动反射镜转动,实现多角度观测。 [0016] 3) The present invention utilizes a mirror drive mechanism to drive rotation of the mirror, to achieve multi-angle observation. 附图说明: BRIEF DESCRIPTION OF:

[0017] 图1是本发明定标装置结构示意图; [0017] FIG. 1 is a schematic view of the structure of the present invention given marking device;

[0018] 图中:1——定标装置支座; [0018] FIG: 1-- abutment scaling means;

[0019] 2——漫反射定标板; [0019] 2-- diffusely reflecting calibration plate;

[0020] 3——漫反射定标板驱动机构; [0020] 3-- diffusely reflecting calibration plate drive mechanism;

[0021] 4——反射镜; [0021] 4-- mirror;

[0022] 5——反射镜驱动机构; [0022] 5-- mirror drive mechanism;

[0023] 6——成像光谱仪。 [0023] 6-- imaging spectrometer.

[0024] 图2是本发明装置三种功能状态图,a.定标状态;b.成像状态;C.防尘、隔热状态。 [0024] FIG. 2 is an apparatus of the present invention, the state of FIG three functions, A calibration state;.. B imaging state;. C dust, insulation state.

[0025] 图3是本发明装置成像时不同观测角度状态图。 [0025] FIG. 3 is a state diagram of different observation angles when the image forming apparatus of the present invention. 具体实施方式: Detailed ways:

[0026] 下面根据图1至图3给出本发明一个较好实施例,用以说明本发明的结构特征和实施方法,而非用来限定本发明的范围。 [0026] Next, FIG. 1 to FIG. 3 shows a preferred embodiment according to the present invention, examples to illustrate structural features and embodiment of the method of the present invention and not to limit the scope of the present invention.

[0027] 本实施例中定标装置包括如下几个部分:漫反射定标板O)、漫反射定标板驱动机构(3)、反射镜G)、反射镜驱动机构(5)、定标装置支座(1)。 [0027] In this embodiment scaling means comprises the following parts: scaling diffusely reflecting plate O), diffusely reflecting calibration plate drive mechanism (3), a mirror G), a mirror drive mechanism (5), the scaling support means (1).

[0028] 1)漫反射定标板O):由掺杂稀土元素的材料经特别设计与制作,具有稳定的化学及物理特性,该漫反射定标板可用于产生特别吸收峰,提供均勻面光源,具体由安光所制作。 [0028] 1) diffusely reflecting plate scaling O): a rare earth doped material, by special design and production, having stable chemical and physical properties, the diffuse reflection sheet may be used to generate scaling particular absorption peak, to provide a uniform surface light, particularly light produced by the security. 本实施例中漫反射定标板可由漫反射定标板驱动机构(3)控制转动,当转至不同角度时分别实现定标、成像、防尘与隔热功能。 The present embodiment may be diffusely reflecting diffusely reflecting calibration plate calibration plate drive means (3) controls the rotation angles when transferred to a different scaling were achieved, imaging, thermal insulation and dust. 漫反射定标板驱动机构(3)由TRUM-30型超声电机、61804型轴承及相应转轴组成。 Diffuse calibration plate drive mechanism (3) by a ultrasonic motor TRUM-30, 61804 and the corresponding bearing shaft composition.

[0029] 2)反射镜:反射镜(4)为表面镀银膜的石英玻璃,作用是将来自漫反射定标板或地物反射的光反射进入光学主系统定标或成像。 [0029] 2) mirrors: mirror (4) is made of quartz glass surface of the silver film, the role of reflecting light diffusely reflected from the calibration plate or a main surface reflectance of the optical system into the calibration or imaging. 本实施例中反射镜(4)可由反射镜驱动机构(5)带动转动不同角度,形成多角度观测。 Example mirror (4) by a mirror drive mechanism (5) driven in rotation at different angles to the present embodiment, formation of multi-angle observation. 反射镜驱动机构(5)由TRUM-30型超声电机、61804型轴承及相应转轴组成。 A mirror drive mechanism (5) by the ultrasonic motor TRUM-30, 61804 and the corresponding bearing shaft composition.

[0030] 3)定标装置支座(1)及成像光谱仪(6):定标装置支座(1)起到过渡与支撑作用, 将定标装置安装于成像光谱仪(6)上。 [0030] 3) Scaling support means (1) and the imaging spectrometer (6): scaling means support (1) play a role in the transition from the support, the scaling means is attached to the imaging spectrometer (6). 本实施例成像光谱仪(6)设计寿命为3年,其光谱分谱率在400-950nm小于10nm,900-2500nm小于15nm,要求实时光谱定标精度优于5nm,辐射定标精度优于10%。 Example Imaging Spectrometer (6) 3-year design life of the present embodiment, in which less than SPECTRAL spectra of 10nm 400-950nm, 900-2500nm less than 15nm, requiring real time spectral calibration accuracy of better than 5 nm, radiometric calibration accuracy of better than 10% .

[0031] 如上所述,成像光谱仪定标装置可将太阳光转变为均勻的含有特征吸收峰的面光源,进入到待定标成像光谱仪器中,实现光谱仪器光谱及辐射定标。 [0031] As described above, imaging spectrometer calibration device may sunlight into a uniform surface light source comprising characteristic absorption peaks, into the determined standard imaging spectrometer instrument, and to achieve the spectral radiation spectrometer calibration. 同时,在定标装置中设计两套转动机构,既可实现定标、成像、防尘与隔热功能转换,又可在成像状态下实现多角度观测。 Meanwhile, two rotary mechanism designed calibration apparatus, can achieve scaling, image, dust and heat conversion function, but also multi-angle observation imaging state.

Claims (1)

1. 一种成像光谱仪定标装置,它由漫反射定标板O)、漫反射定标板驱动机构(3)、反射镜G)、反射镜驱动机构(5)及定标装置支座(1)组成,其特征在于:所述的定标装置安装于成像光谱仪(6)光学系统入口处;所述的漫反射定标板O)固定在定标装置支座(1) 的下端,在漫反射定标板驱动机构(3)中电机驱动下以定标装置支座(1)上的固定点为轴心转动;所述的反射镜(4)固定在定标装置支座(1)的上端,在反射镜驱动机构(5)中电机驱动下以定标装置支座(1)上的固定点为轴心转动;所述的定标装置在非工作状态时,漫反射定标板O)、反射镜由其驱动机构带动与定标装置支座(1)闭合,对光谱仪防尘、 隔热保护;所述的定标装置在工作时,漫反射定标板驱动机构(3)将漫反射定标板(2)转动至水平方向,太阳光入射至漫反射定标板O),经反射镜(4)反射进入 An imaging spectrometer scaling means, which consists of diffuse reflection plate scaling O), diffusely reflecting calibration plate drive mechanism (3), a mirror G), a mirror drive mechanism (5) and the scaling means abutment ( 1) composition, characterized in that: said scaling means is attached to the imaging spectrometer (6) of the optical system at the entrance; the diffuse reflectance calibration plate O) is fixed to the lower end of the support scaling means (1), in diffuse scaling driving means (3) to the motor drive scaling means fixed point on the support (1) as the axis of rotation; said mirror (4) fixed to support scaling means (1) the upper end, the mirror drive mechanism (5) in the motor drive at a fixed point on (1) the axis scaling rotatable support means; said scaling means in the non-operating state, the diffuse reflection plate calibration O), the mirror driving mechanism driven by the scaling means support (1) is closed, the spectrometer dust, insulation protection; said scaling means is in operation, the diffuse reflection plate calibration driving mechanism (3) the diffusely reflecting calibration plate (2) is rotated to the horizontal direction, sunlight is incident to the diffuse reflection plate calibration O), via the mirror (4) reflected into 像光谱仪(6),即可开始对仪器进行光谱及辐射定标;当需要成像光谱仪工作时,由漫反射定标板驱动机构(3)带动漫反射定标板(¾转动至竖直向下方向,此时仪器可对目标进行观测,由反射镜驱动机构(5)带动反射镜(4)转动某一角度,即可实现不同角度的成像观测。 Like spectrometer (6), to start the instrument and the radiometric calibration spectrum; when imaging spectrometer work required by the scaling diffuse reflection plate drive mechanism (3) with a calibration animation reflecting plate (¾ rotated to vertically downward direction, then the target instrument for observation by the mirror drive means (5) driven by a mirror (4) is rotated a certain angle, the observed image can be realized at different angles.
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