Probe of airborne multi wave section bidirection atmosphere radiation detecting instrument
A technology of atmospheric radiation and detectors, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of difficult to overcome and limitations of error sources, and achieve the effect of solving real-time and synchronization problems and simple and compact devices
Inactive Publication Date: 2005-05-25
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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The dark target itself has its own natural defects: first, the ground is a premise of water or dense vegetation, which limits the inversion area; second, the dark target inversion method is based on assumptions and statistics Basically, this determines that the error sources are difficult to overcome, and these error sources are even large in some cases, such as in the case of polluted offshore waters, etc.
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[0024] Such as figure 1 , 3 As shown, the present invention is equipped with two CCD cameras 1, 2 and 20° of field of view angles on the radiation probe 3 of two directions, three spectra, and six channels. 3 is that there are three mutually parallel vertical passages 8, 9, 10 on a rigid member, and three mutually parallel oblique passages 11, 12, 13, passage 8 and passage 11, passage 9 and passage 12, passage 10 and passage 13, all form an included angle of 55° and form a group of spectral channels; each channel has steps turned by a lathe, and the lens 14, optical filter 15, light bar 16, and photodiode detector 17 are sequentially installed on the steps in the channel Channel 8 and channel 11, channel 9 and channel 12 are atmospheric spectral channels, and the spectral bands of its optical filter 15 are respectively 550nm and 670nm, and the spectral bandwidth is 20nm; Channel 10 and channel 13 are ground background spectral channels, and its filter The spectral band of th...
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The present invention disclosed a probe of airborne multi-band bidirectional atmospheric radiation detecting instrument. It is characterized by that on a rigid component thee mutually-parallel vertical channels and three mutually-parallel oblique channels ore set, every vertical channel is adjacent to one oblique channel, and included angle between them is 55 deg. so as to form a group of spectral channels, in the optical circuit of every channel are successively mounted lens, filter, light diaphragm and photoelectric diode detector, the spectral wave bands of filters of two groups of atmospheric spectral channels are respectively 550 nm and 670 nm, the spectral band width of them is 20 nm, and the spectral wave band of filter of another group of ground background spectral channel is 1640 nm, and its spectral band width is 40nm.
Description
technical field [0001] The invention belongs to optical and electronic measurement, in particular to an airborne multi-band two-way atmospheric radiation detector. Background technique [0002] In the early days of quantitative remote sensing, people tried to bypass the problem of atmospheric correction by using the vegetation index (NDVI) (Tucker, 1979), although in fact it did significantly reduce the influence of the atmosphere (Kaufman and Tanré, 1992), but it can The remote sensing products provided are single, and their functions are limited by regions and seasons. [0003] To improve the application effect of satellite data, it is impossible to circumvent the problem of atmospheric correction, so the research on direct atmospheric correction using radiative transfer calculation has been widely developed (Moran et al., 1992). This method fundamentally solves the problem of atmospheric correction of various remote sensing products. However, the application of this met...
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IPC IPC(8): G01N21/17G01N21/27
Inventor 王先华孟凡刚洪津张运杰龚平乔延利
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI