概述

ASD FieldSpec

®

 4 Hi-Res NG 光谱辐射仪的增强光谱分辨率设计用于满足新一代高光谱成像系统的要求,如 AVRIS-NG 和 HySpex ODIN-1024。 除了光谱分辨率外,ASD FieldSpec 4 Hi-Res NG(与所有 ASD 系列光谱辐射仪一样)还集成了渐变折射率 InGaAs 光电二极管 SWIR 检测器,可在野外便携式设备中提供很小的可用光谱采样间隔,在 350 至 2,500 nm 的完整光谱范围内具有 1,875 个测量波长,确保甚至可以检测到细微的光谱特征。

关键应用

ASD FieldSpec 4 Hi-Res NG 光谱仪适合在许多行业应用中使用,包括: 

植物生理学
ASD 系统用于确定植物生理状态,包括病情状况、与氮素吸收和水分平衡相关的营养状况。

伪装表征和检测 
伪装或隐藏物体的检测需要能提供物体和背景材料之间对比的测量。 

传感器校准 
成像传感器的精确辐射度校准对许多遥感应用至关重要。 

监督分类 
可以使用图像导出的或野外测量的光谱特征来执行监督分类。 

光谱辐射和辐射度校准 
光谱辐射是对每种波长下的绝对光辐射的测量,适用于多种设置,包括测量灯、LED 显示屏或其他光源的光谱能量输出,以确定到达森林地被物或其他场所的阳光通量。 

光谱遥感 
采集可见光、近红外和短波红外图像,以对表面材料、生物和化学过程进行检测、鉴定和定量,适用于多种环境和军事应用中的研究和分析。 

地面实况调查 
实验室质量的原位现场测量具有等值照度和查看几何,以便准确关联卫星和飞机传感器数据。 

遥感和地质 
几十年来,ASD 的光谱辐射仪一直用于远程地质解读。 

野外光谱学 
野外光谱学 — 研究野外环境中的物体光谱特征与其生物物理属性之间的相互关系。 

景观生态学和生态学研究 
能够在野外准确执行植被和土壤的反射率及辐射度测量对于了解植物群落内的光能利用和分区至关重要。 

大气遥感研究 
对直射、漫射和总光谱太阳辐照度以及天空和云辐射度的观察对于许多气候和生态系统能量平衡研究中的大气研究至关重要。 

航空遥感测量 
采集过大或无法进行地面测量的区域的光谱。 

生物质分析 
从大豆和其他作物的油含量表征到生物燃料处理中关键参数水平的定量和最终产品的质量分析,近红外 (NIR) 光谱是理想的测量工具。 

技术指标

光谱范围350-2500 nm
光谱分辨率3 nm @ 700 nm
6 nm @ 1400/2100 nm
光谱采样(带宽)1.4 nm @ 350-1000 nm
1.1 nm @ 1001-2500 nm
扫描时间100 毫秒
杂散光规格VNIR 0.02%、SWIR 1 和 2 0.01%
波长再现性0.1 nm
波长精度0.5 nm
最大辐射度VNIR 2X Solar、SWIR 10X Solar
通道2151
检测器VNIR 检测器 (350-1000 nm):512 元素硅阵列
SWIR 1 检测器 (1001-1800 nm):渐变折射率 InGaAs 光电二极管,双级 TE 冷却
SWIR 2 检测器 (1801-2500 nm):渐变折射率 InGaAs 光电二极管,双级 TE 冷却
输入1.5 m 光纤(25° 视场)。 提供可选的视场更窄的光纤。
噪声等效辐射 (NEdL)VNIR  1.0 X10-9  W/cm2/nm/sr @700 nm
SWIR 1  8.0 X10-9  W/cm2/nm/sr @ 1400 nm
SWIR 2  8.0 X10-9  W/cm2/nm/sr @ 2100 nm
 
重量5.44 kg (12 lbs)
校准

波长、绝对反射率、辐射度*、辐照度*。 所有校准均为 NIST 可溯源校准。 (*辐射度校准为可选)

计算机

Windows® 10 64-bit laptop(仪器控制器)

保修

一年完整保修,包括专家级的客户支持

附件

ASD FieldSpec® 4 Hi-Res NG 光谱辐射仪

探头和照明

Contact Probe

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The ASD Contact Probe is designed for contact measurements of solid raw materials such as minerals, grains, other granular materials. Its innovative optical design minimizes measurement errors associated with stray light and allows for measurement of samples through clear and transparent plastic bags.

In addition to the standard contact probe, ASD also offer the Hi-Brite contact probe and the Plant Probe.

All contact probes are available with a ruggedized cable feed and cable, designed for applications that involve extra cold or harsh temperatures. (see image below specifications)

Specifications:

Length10" ( 25.4 cm)
Weight1.5 lbs (.7 kg)
Power requirements12-18 VDC, 6.5 W
Lightsource type/Life (approx.)Halogen bulb/1500 hours
Halogen bulb color temperature2900 K
Spot size10 mm
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Hi-Brite Contact Probe

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The same design, features, and benefits of ASD's standard contact probe, but with a higher intensity illumination setting on the sample window. This higher intensity illumination is ideal for inorganic applications, and is recommended for mineral and ore characterization in mining exploration and research applications using the TerraSpecFieldSpec 4 Hi-Res and LabSpec Hi-Res spectrometers.

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Hi-Brite Muglight

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The same design, features, and benefits of ASD's standard Muglight, but with a higher intensity illumination setting on the sample window. This higher intensity illumination is ideal for inorganic applications, and is recommended for use with the TerraSpecFieldSpec 4 Hi-Res, and LabSpec 4 Hi-Res spectrometer models.

The Hi-Brite Muglight is designed for analysis of raw materials requiring reflectance and absorbance measurements. It can measure samples through glass vials, or using the ASD sampling tray adapter. It's unique and innovative design minimizes measurement errors associated with stray light and specular reflected components.

Size5.5” x 3.7” (14cm x 9.4cm)
Weight2.91 lbs (1.3 kg)
Power requirementsInput power 5.5 W, bulb 4 W
Light source (type/life) approx.Tungsten Quartz Halogen b/1500rs
Bulb color temp2900 K
Spot size12 mm
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Muglight

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The ASD Muglight is designed for analysis of raw materials requiring reflectance and absorbance measurements. It can measure samples through glass vials, or using the ASD sampling tray adapter. It's unique and innovative design minimizes measurement errors associated with stray light and specular reflected components.

For users requiring higher intensity illumination, ASD also offers the Hi-Brite Muglight.

Muglight specifications:

Size5.5” x 3.7” (14cm x 9.4cm)
Weight2.91 lbs (1.3 kg)
Power requirementsInput power 5.5 W, bulb 4 W
Light source (type/life) approx.Tungsten Quartz Halogen b/1500rs
Bulb color temp2900 K
Spot size12 mm
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Plant Probe

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The same great design and functionality as ASD's standard contact probe with a lower intensity bulb position for non-destructive data collection from live vegetation and other heat-sensitive targets.

The plant probe can be used alone or in combination with a Leaf Clip to protect sensitive plants.

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Leaf Clip Version 2

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ASD's Leaf Clip assembly interfaces with the ASD Plant Probe. The Clip comes with the same replaceable white and black background standards (eight of each including the pre-mounted ones) that were included with the previous version of the leaf clip. 

The white backgrounds are .120mm thick x .935" OD Gore-Tex white PTFE reflector material. The black backgrounds are .004" thick x .935 OD black painted Vinyl. White Reference Cap (A122634) or 3.62” Spectralon (A128533) can be used as white background in addition to the Gortex for more accurate measurements. 

The Leaf Clip 2 also uses the same mounting bracket as the FieldSpec pistol grip, enabling it to be secured to the backpack waist belt when not in use.

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Integrating Sphere

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Integrating spheres collect reflected light from samples over a full hemisphere. The sphere, by nature of its internal diffuse (lambertian) reflection and integration of the energy, is insensitive to directional reflectance features coming from the sample, and therefore, gives a very repeatable “averaged” response to the reflectance of the sample placed in the beam at the sphere port. Sample placement and incidence beam/collection alignment are less critical to the measurement results because the integrating sphere looks at representative averaged energy from all angles at the same time.
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通用附件

Pistol Grips

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ASD offers multiple pistol grip options for superior ease-of-use and adaptability to a variety of environmental and situational elements, when using your FieldSpec® and FieldSpec HandHeld instruments. All pistol grip designs include the quick-connect/disconnect fiber optic cable snap-in feature, pistol grip clip assembly for safely and securely affixing the pistol grip to your waist-belt on the back pack, and many offer a built-in bulls-eye level for added precision.

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Reference Panels

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ASD carries a wide array of calibrated and non-calibrated diffuse white and gray reference panels in varying sizes (from 2 x 2 in. to 12 x 12 in. or 5.1 x 5.1 cm to 30.5 cm x 30.5 cm) and reflectance levels, including encapsulated gray scale (NIST/NRC traceable) wavelength and USP standards for USP 1119. Calibrated panels come with certificate and documentation showing standard deviation and reflectance factors.

All reference panels and standards may be purchased separately. To provide our customers with a more cost-effective approach, specific sizes or styles of reference panels are included in accessory bundles designed for maximum compatibility with a particular application.

Your ASD sales representative will be able to advise you on the best option(s) for your needs.

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FieldSpec Dual

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Stop waiting for “ideal” weather to get your fieldwork done

The FieldSpec Dual collection software system leverages the value and utility of the world’s most trusted line of portable field spectrometers. The software intercalibrates and wirelessly synchronizes two ASD FieldSpec spectroradiometers to collect near simultaneous white reference and sample target radiance spectra. The system virtually eliminates errors associated with time varying atmospheric conditions, one of the biggest challenges to collecting accurate field spectra.

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