Description
The SR-5000N Remote Sensing Spectroradiometer
is the result of the latest new redesign of the SR 5000, the CI Systems’ flagship product for the last 35 years.
The SR 5000N spectroradiometer measures the spectral signatures of objects from a distance which can vary from a few meters to many kilometers.
The measurements can be done either spectrally, yielding radiance as function of wavelength or radiometrically to obtain radiance as function of time. A comnbination of
UV spectroradiometer
VIS spectroradiometer
SWIR spectroradiometer
MWIR spectroradiometer
LWIR spectroradiometer
The SR5000N remote sensing spectroradiometer is the ideal spectroradiometer for research applications of Remote Sensing, due to the wide spectral range covered (from UV to LWIR), the high sensitivity of the cooled detectors used in the system, and the accuracy of the radiometric calibration based on our state-of-the-art blackbodies.
Some instrument parameters (such as field of view, focusing distance, measurement time and others) can be controlled by the user so that, together with the user friendly interface, the work becomes efficient and easy.
Download Brochure SR5000N remote sensing spectroradiometer
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SR5000N Spectroradiometer for Remote Sensing
Calibration and testing of | Development and production of | Monitoring and measurement of |
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- Automatic self-calibration
- Real-time data analysis and display
- Rapid scan rates
- Integrated with imaging system
- Spectral mode measurements (radiance vs. wavelength)
- Radiometric mode measurements (radiance vs. time)
- Modern Software
- Accurate even for measurements of objects that are at ambient temperatures
- Signal averaging for improved sensitivity
- Mathematical computation with spectral data
- Transient analysis of rapidly occuring events
- 3-D plots (radiance vs. time and wavelength)
- Spectral emissivity measurement
- Effective temperature measurement
- Countermeasures analysis
SR5000N Remote Sensing Spectroradiometer
| FOV Options | 7.5 mrad (NFOV), 5 deg (MFOV), 10 deg (WFOV) and 20 deg (VWFOV) |
| Focusing range | NFOV: Short-Range-Focus: 1-2 meters Mid-Range-foucus: 1.5-4 meters Long-Range-Focus: 2.8 meters to infinity 1 meter to infinity for all the other optics |
| Spectral range | 0.2 to 14.3 µm |
| Spectral resolution | <2% of wavelength in the 1.0-14.2 µm band |
| Spectral Scan Rate | Various scan rates of up to 50 spectrums/sec |
| Aiming and focus | integrated CCD and LCD display |
| Noise Performance | Example; 5 mK for an InSb detector at 5.0 µm, 1 Hz bandwidth, 100 deg C blackbody |
- High sensitivity
- High accuracy
- Wide spectral band (UV to IR)
- High Reliability
- Modular system
- Usable in laboratory or field
Customers who have been using CI Systems’ SR-5000 can now increase their measurement capability by getting the latest IR measurement technology with the newly designed SR- 5000N remote sensing spectroradiometer.
The SR-5000N remote sensing spectroradiometer incorporates a wide range of improvements based on the accumulation of experience at CI Systems on the needs of remote sensing measurements over a long period of time and exposure to its customers’ applications.
These improvements increase usage flexibility and make the work easier and more efficient. The additional features and improvements over the old model are given below. We believe, as a result, that the SR 5000N will be a great addition to the capabilities of your Remote Sensing laboratory
The difference between the SR 5000 and the SR 5000N are:
- Measurement speed
The measurement speed in radiometric mode (chopped) is increased by almost a factor of two from 30 to 50 spectral scans/second, while in the transient (unchopped) mode it is improved by a factor of five from 2×104 to 105samples/second. - Field of view flatness
Uniformity of response as function of position of a point source within the field of view of the instrument is called “FOV flatness”. This parameter is significantly improved from about 11% deviation from constancy to a worst case of 5%,where the optics contribution is designed to be only 1% - Simultaneous visible and IR spectral measurements of the same object
Until now it was not possible to measure an object’s spectrum in both visible and infrared ranges simultaneously because these two ranges could be covered only by physically replacing the CVF and the detector in the instrument. Today the SR 5000N has an added visible spectrometer optical channel complete with its own monochromator and detector, in parallel to the CVF IR optical channel.These two channels are pointed into the same direction and they measure the same object simultaneously in one fell swoop. - Easier pointing on the object to be measured and background image recording
In the SR 5000 pointing the instrument field of view on the object to be measured is cumbersome because the user is presented with an upside down, somewhat washed out background image. In the SR 5000N pointing, focusing and image recording is implemented with a CCD boresighted with the measurement channel line of sight. The background image recorded by this digital camera is easily seen on a large display on the optical head’s back panel before (for pointing) and during the measurement (for later data analysis, measurement set-up recording, etc.).
Remote Sensing Spectroradiometers: Latest Trends & Modern Technology in the Field
Field Spectroradiometers play an important role in the field of remote sensing, helping applications measure spectral signatures of elements from any given distance. While they have been around for at least two decades now, their usage has only increased tremendously over the past few years. Thanks to the research development in building devices that have a bunch of extra features like built-in computer programming, direct display, sampling functions, and portability. The latter has given rise to what are known as field spectroradiometers (as opposed to laboratory version of these devices which are relatively larger) which can be used to make spectral measurements of light sources such as plants and canopies as well as military purposes.
All of this highlights the significance of spectroradiometers in modern-day remote sensing and spectral power distribution (SPD) measurements. This article hopes to shine more light into why these light-calibrating devices are important by focusing on the latest trends in remote light sensing and its myriad of applications today.
Operating Principle of a Remote Sensing Spectroradiometer
Before digging deep into the recent trends, it is important to understand the basic premise of spectroradiometers. In simple words, it is a device used to measure certain spectral values such as luminance, irradiance, chromaticity, and radiant intensity in different sources of light. The information collected through this spectral measurement can be used to characterize and calibrate the sources of light, thereby giving us a complete scope and description of the light’s source. In most cases, an integrating sphere or a blackbody is used for the calibration purpose.
A spectroradiometer is made up of several components, four of the most important ones are listed below:
- Input optics – to gather the source’s electromagnetic radiation
- Monochromator – to collect the source’s wavelength information
- Detector – to detect and sample this collected information
- Analyzer – to control, analyze, and log data that may be used at a later stage (in a process)
Considering its chief components, its USP is the ability to work independently without the need for external control or analysis system. It is a standalone device that works effectively on its own and provides data that can be easily sampled onto third-party devices such as external displays. This is also the basic premise of a field spectroradiometer where it can be used for any type of external application and still provide highly accurate data while preventing errors (atmospheric).
When compared to a spectrometer, this device measures all types of radiometric, photometric, and colorimetric elements, thus giving a blanket approach at light measurement. It must be seen as a hybrid between a spectrometer and a radiometer which provides quick and accurate measurements with added portability and affordability.
Some of the spectroradiometers’ most common applications are CFL testing, LED measurement, and display measurement (televisions and monitors). Today, field spectroradiometers are used for traffic lights, daylight measurement, and architecture models. As it becomes a more essential part of such applications, it signifies the need for more development.
So, let’s have a look at the main trends that are governing research and development in remote sensing spectroradiometers.
Latest Trends in Remote Sensing Spectroradiometer
The world is going digital. And, so increased the need for such instruments to adapt to these digital systems. In a way, this need to sync with users’ advancing requirements has resulted in a spurt in how technology develops itself. And the biggest evidence we have in this regard is a spectroradiometer itself.
The Advent of Digital Devices
The first trend is its standalone ability – without the need for an external computer – to measure spectral values. Moreover, certain models in the market even have touch-screen displays attached to these devices that only increase their usability in an environment that is continuously looking at reducing overhead costs. The advent of electronic and digital devices to complement analog activities like spectroradiometry is one of the most interesting trends seen in the current landscape.
A good example of this is Konica Minolta’s CS-100 spectroradiometer that has a spectraval CAM with a touch-screen display. Compare that with CI Systems’ flagship SR-5000N remote sensing spectroradiometer – one of the most resilient devices for remote sensing in the market today – and it is clear that a hybrid of these two devices is likely the industry’s next lucrative target.
Powerful New Interfaces
This complements the first trend where new interfaces like Bluetooth and NFC are being equipped in complicated systems to aid in measurement, data collection, and data transmission. WLAN is another interface that has given the maximum output in this field which has made it convenient for technicians to obtain measuring data almost instantaneously.
Miniaturization
This not only deals with the form factor of the remote sensing spectroradiometer. It also has to do with data transfer through miniature functions like the popular USB. Smaller devices mean more convenience as they can be attached to a production line for constant capturing, analysis, and communication.
Imagine a bio-plant factory where there is a need to analyze plant activity every minute of the day. A miniature field spectroradiometer that can be attached to the assembly line and be used to obtain data in real time would come in very handy for this purpose. And that is where most manufacturers are focusing presently. From ground-based applications to underwater remote sensing, this can have a massive impact on how luminance data is collected and transmitted.
Multichannel Spectroradiometers.
This is probably the most obvious trend. The luxury of measuring multiple, different objects simultaneously using a single device is something that can be a boon to the industry. It will not only bring down R&D and production costs but will also lead to much more complex processes. Especially because it has its own set of disadvantages (varied measuring time and switching errors). While the disadvantages are not terrible deal breakers, it makes sense to consider them while attempting to break the status quo of these sensing devices.
Thanks to the constantly changing landscape of this volatile industry, it is safe to say that there will be a few more trends ready to unleash themselves, surrounding spectroradiometers and remote sensing.
For any question and to find out more, Ci Systems team would be happy to assist you.
