- A portable system ideal for Ground Truth Validation Campaigns
- Automatic calculation of different vegetation indices, eg NDVI, PRI, LAI, etc.
- Results can be viewed on the display, stored and/or logged
- Choice of sensors types depending on application
- Standard NDVI & PRI wavelengths or your choice
- Wavelengths can be matched to one of the Earth Orbiting Satellites, eg MODIS
- Sensors are individually calibrated and supplied with a calibration certificate
- Calibration is traceable to the UK’s national standard, NPL
- GPS location stored with sensor readings
SYSTEMS INCLUDE METER & DATALOGGER, SENSORS AND HAND-HELD POLE
NDVI
Channel 1 – 650 nm centre wavelength, 40nm bandwidth
Channel 2 – 800 nm centre wavelength, 40nm bandwidth
(we are also available to supply other NDVI wavelengths, please enquire)
PRI
Channel 1 – 531nm centre wavelength, 10nm bandwidth
Channel 2 – 570nm centre wavelength, 10nm bandwidth
2-Channel Sensor for NDVI or PRI
SKR 1840 - 2 CHANNEL RADIOMETER | |
Construction | UV resistant Delrin 527UV |
Cable | Screened 3 core military specification |
Detector | Wavelength dependent |
Filters | Metal Interference and/or glass depending on wavelength and bandwidths chosen |
Linearity error | <0.2 |
Absolute calibration error | typ. <3%, 5% max |
Cosine error | ± 3% |
Longterm stability | ± 2% |
Temperature Range | -25 to +70°C |
Weight | 295g with 3m cable |
Dimensions | 49mm (diameter) x 86mm (height) |
IP rating | IP67 |
4-channel Sensors for NDVI and PRI
SKR 1850 | SKR 1860 | |
No. channels | 4 | 4 |
IP Rating | IP 54 | IP 67 |
Construction | Black acetyl and black anodised | Anodised aluminium housing. Cosine correcting diffuser and optical glass |
Cable | Screened military specification | Screened military specification |
Wavelengths | Choose between 400nm and 2400nm | Choose between 400nm and 2400nm |
Bandwidths | Choose from 5nm up to 100nm | Choose from 5nm up to 100nm |
Filters matched in pairs for incident and reflected sensors | ✔ | ✔ |
Detector | Wavelength dependent | Wavelength dependent |
Filters | Metal Interference and/or glass depending on wavelength and bandwidths chosen | Metal Interference and/or glass depending on wavelength and bandwidths chosen |
Output | µA | µA or voltage |
Amplified models available | ✔ | ✔ |
Linearity error | <0.2 | <0.2 |
Absolute calibration error | typ. <3%, 5% max | typ. <3%, 5% max |
Cosine error | ± 3% | ± 3% |
Longterm stability | ± 2% | ± 2% |
Temperature Range | -25 to +70°C | -25 to +70°C |
Weight | 400g | 600g with 3m cable |
Dimensions | 54mm (with head) x 85mm (with head) | 59mm (body diameter), 67mm with cosine correcting head 93 mm (height with head) |
Suitable for Permanent Installations | X | ✔ |
Compatible with Skye's range of SpectroSenses and DataHogs | ✔ | ✔ |
SKL 904 | SKL 908 | SKL 925 | |
No. of Channels | 4 | 8 | 8 |
Logging Capability | X | ||
Operating Range | -20 to +70°C | -20 to +70°C | -20 to + 70°C |
Dimensions | 200mm (l) x 150mm (w) x 70mm(d) | 200mm (l) x 150mm (w) x 70mm(d) | 200mm (l) x 150mm (w) x 70mm(d) |
Weight | 700g | 700g | 700g |
LCD Display | 20 x 4 line alphanumeric | 20 x 4 line alphanumeric | 20 x 4 line alphanumeric |
Construction | Black ABS | Black ABS | Black ABS |
IP Rating | IP 54 | IP 54 | IP 54 |
Keypad | 8 key membrane keypad | 12 key membrane keypad | 12 key membrane keypad |
Power | Internal 9 volt PP3 | Internal 9 volt PP3 | Internal 9 volt PP3 |
Battery life | 4050 hours in display mode | 4050 hours in display mode | 4050 hours in display mode |
Resolution | Min 16 bit | Min 16 bit | Min 16 bit |
Input ranges | Current : ±20nA to ±2mA Voltage: ±2mV to ±2V | Current : ±20nA to ±2mA Voltage: ±2mV to ±2V | Current : ±20nA to ±2mA Voltage: ±2mV to ±2V |
Memory | Sensor Library for up to 16 calibration factors | Sensor Library for up to 16 calibration factors | Sensor Library for up to 16 calibration factors |
Battery backed memory & clock | |||
Clock | Real time | Real time | Real time |
Logging Intervals | N/A | 1,2,5,10, 20,30 secs | 1,2,5,10, 20,30 secs |
Inputs | Choice of 4 current, 4 voltage or a combination | Choice of 8 current, 8 voltage or a combination | Choice of 8 current, 8 voltage or a combination |
Direct readout of NDVI & other VI | X | ||
Compatible with all Skye Sensors | |||
Compatible with sensors from other manufacturers | Generally yes, but please enquire | Generally yes, but please enquire | Generally yes, but please enquire |
GPS functionality | X | X |
SYSTEMS
Land-based Systems for Remote Sensing
Sensors & Systems for Precision Agriculture
Sensors and Systems for PRI
SENSORS
2-Channel Sensors for Portable Systems
2-Channel Sensors for Permanent Installations
4-Channel Sensors for Portable Systems
4-Channel Sensors for Permanent Installations
METERS AND DATALOGGERS
SpectroSense2+ with GPS
DataHog2 with SD storage
