EQUIPMENT

Sensors

The MRSGroup is equipped with a big variety of high-resolution customize and specialized hyperspectral (OCI-F hyperspectral Imager), multispectral (3P SLANTRANGE, Sequoia MicaSence) and optical  (Sony A5100, Canon IXUS 160, Canon IXUS 140) sensors.

HYPERSPECTRAL CAMERAS

OCI-F HYPERSPECTRAL IMAGER (VIS/NIR)

MRSG’s OCI™­F Series ("All Seeing Eye") hyperspectral camera is optimized for VIS-NIR spectrum applications. Mounted on a UAV it is used for making accurate ground measurements, marine litter detection and coastal mapping.

This sensor is a miniaturized push-broom hyperspectral camera covering the full VIS-NIR (400-1000 nm) wavelength range, with a SuperSpeed USB 3.0 interface. It features ultra-compactness (14 cm x 7 cm x 7 cm) and light weight (~ 570 g) with fast data transfer rates (up to 60 fps). As an innovative “true push-broom” hyperspectral imager, the OCI-F Series is not dependent on a constant scanning speed and it offers versatility on various platforms such as UAVs with perfect hyperspectral image stitching.

Key Specs:

  • “True push-broom” operation mode
  • 400-1000 nm spectral range
  • 240 spectral bands
  • 800 x scan length spatial pixels
  • 16 mm (21° FOV) lens

SPECTROMETER

OCEAN OPTICS STS-VIS

A small spectrometer suitable for field spectral signature sampling. Connected with a Raspberry Pi micro-computer, powered by powerbank, this sensor can visualize its readings in real-time in the field through a wifi connection. MRSG possesses the version that takes measurments in the visible spectrum (350-800nm), making it an excellent instrument for marine applications.  

Key Specs:

  • 350-800 nm spectral range
  • Signal to noise ratio: >1500:1
  • Wavelength Accuracy: 0.13 nm
  • Size: 40x42x26 mm
  • Weight: 60g

MULTISPECTRAL CAMERAS 

SLANTRANGE 3P

The two MRSG SLANTRANGE 3p multispectral cameras are uniquely customized  having specific bands of Sentinel-2 and Sentinel-3 satellites, for mapping coastal environments. 

SLANTRANGE pioneered, and patented, a new approach to measurement accuracy with the introduction in 2014 of onboard, band-matched solar characterization, and radiometric calibration.

The MRSG customized SLANTRANGE 3p consist of Innovative new design elements that run together through the integrated hardware/software architecture to deliver the most accurate measurements available for small aircraft:

  • Integrated solar spectrometer for frame-to-frame radiometrically accurate reflectance measurements (US Patents 9,470,579 and 9,791,316)
  • Individual lens characterization for precise dewarping and de-vignetting
  • Optimized algorithms for dynamic cross-channel registration
  • Smart Filtering™, which selectively samples scene elements to avoid the contaminating effects of background soils, shadows, specular reflections, or other noise sources.

Specifications SLANTRANGE 3p Spectral Channels (Vegetation Sensor) 4 Spectral Channels (Ambient Illumination Sensor) 4 Processor Type Qualcomm Snapdragon 801 Processor Speed Quad-Core 2.26GHz On-Board RAM 2 GB Detector Type Si CMOS Available Spectral Range 410 - 950 nm Band Positions Selectable Shutter Type Global Positioning & Pointing Integrated GPS/IMU with Extended Kalman Filter GSD @ 120 m AGL 4.8 cm Recommended Image Overlap 20% (SlantView analytics only) Linear Coverage Rate @ 120 m AGL, 20 m/s 1,000 Acres/Hour 160 Acre Survey @ 120 m AGL, 20 m/s (fixed wing) 17 Minutes 160 Acre Survey @ 120 m AGL, 12 m/s (multi-rotor) 25 Minutes Available Information Layers Population Density, Population Size Distributions, Emergence Fraction, Weed Coverage, Stress, Vegetation Fraction, Chlorophyll Index, Yield Potential, GNDVI, RNDVI, Red Edge NDVI, Color, User-Defined Smart Detection On Board Data Storage (Removable) 64 GB (4 hours) Output Formats KML, SHP, GeoTIFF Size (Vegetation Sensor) 14.6 x 6.9 x 5.7 cm Size (Ambient Illumination Sensor) 8.1 x 3.5 x 1.7 cm Weight 350 g Power 11 W @ 9.0-28.0 VDC Patents 9,470,579 9,791,316

Parrot Sequoia

The Parrot Sequoia is a powerful multispectral sensor in a pocket-sized package. Featuring an integrated GPS/light sensor, four narrowband imagers, and an RGB camera for digital scouting, Sequoia is optimized for crop health analysis for almost any size aircraft. 

Key Features

  • Multispectral camera for agriculture

  • Self-calibrated using the Sunshine sensor

  • RGB camera 16 Mpx for scouting

  • High photo rate (1 picture per second)

  • Independent from the drone

  • Standard protocol (PTP) for communication with drones

  • USB powered

Specifications
Weight: 135 grams (4.8 oz.)
(including Sunshine Sensor and cable) Dimensions: 5.9 cm x 4.1 cm x 3.0 cm (2.3 in x 1.6 in x 1.2 in) External Power: 5.0 V DC, 8 W nominal (12 W peak) Spectral Bands: Green, red, red edge, near IR (global shutter, narrowband) RGB Color Output: 16 MP (rolling shutter) Ground Sample Distance (GSD): 13 cm per pixel (per band) at 120 m (~400 ft) AGL Capture Rate: 1 capture per second (all bands), 10-bit RAW Interfaces: USB (PTP) Field of View: 70.6° HFOV

SONY A5100

A5100 is one of the smallest, lightest and most affordable mirrorless cameras currently offered with an APS-C sensor. 

Has a very small and comfortable form factor; Very good image quality for its class; Quick autofocus and good dynamic range.

Has the following full specs:

  • Lens Sony SELP1650 PZ 16-50mm f/3.5-5.6 OSS; 9 elements in 8 groups, 4 aspheric surfaces
  • Resolution 24.3MP
  • Processor Bionz X
  • AF system (contrast/phase) 25 / 179 point
  • ISO range 100-25600
  • LCD design (tilt up/down) Tilting (180° up)
  • Touch-enabled LCD Yes
  • EVF type / resolution None
  • EVF magnification (equiv.) N/A
  • Built-in flash Yes (GN4)
  • Max burst rate 6 fps
  • Video resolution 1080/60p/24p
  • Video codecs XAVC S, AVCHD, MP4
  • Clean HDMI output Yes
  • Battery life (CIPA) 400 shots
  • Sensor Type:   CMOS
  • Sensor Manufacturer: Sony
  • Effective Megapixels: 24.3
  • Sensor Format:           APS-C
  • Sensor size:     366.6mm2 (23.50mm x 15.60mm)
  • Approximate Pixel Pitch:        3.92 microns
  • Focal Length Multiplier:         1.5x
  • Aspect Ratio:  3:2
  • Color Filter Type:        RGBG
  • Anti Aliasing Filter:     Fixed
  • Self-Cleaning: No
  • Sensor shift image stabilization:       No
  • On-Sensor Phase Detect:        Yes
  • DxO Sensor Score:      80
  • DxO Color Depth Score (bits): 23.8
  • DxO Dynamic Range Score (evs):       12.7
  • DxO Maximum Effective ISO Score (iso):      1,347

Canon IXUS 160

One IXUS 160/PowerShot Digital ELPH 160 wich sits in the middle of Canon’s super-slim IXUS line-up. It boasts a 20MP 1/2.3” CCD sensor and an 8x optical zoom lens with a 35mm-equivalent focal range of 28-224mm. 

This camera is used as the ligthweight optical sensor in our Fixed wing Phoreas with a custom made case and specific open scourse software.

Specifications

  • IMAGE SENSOR
    • Type    1/2.3 type CCD
    • Effective Pixels           Approx. 20.0M¹
    • Effective / Total Pixels           Approx. 20.5M
    • Colour Filter Type       Primary Colour
    • IMAGE PROCESSOR
    • Type    DIGIC 4+ with iSAPS technology
  • LENS
    • Focal Length   5.0 – 40.0 mm (35 mm equivalent: 28 – 224 mm)
    • Zoom   Optical 8x
    • ZoomPlus 16x
    • Digital Approx. 4x
    • Combined Approx. 32x¹
    • Maximum f/number   f/3.2 – f/6.9
    • Construction    8 elements in 7 groups
    • (1 double-sided aspherical lens)
    • Image Stabilisation    Digital (Digital IS Mode)
  • FOCUSING
    • Type    TTL
    • AF System/ Points      AiAF (Face Detection / 9-point), 1-point AF (fixed to centre)
    • AF Modes        Single, Continuous (Auto mode only), Servo AF/AE, Tracking AF¹
    • AF Lock            Yes
    • AF Assist Beam          Yes
    • Closest Focusing Distance      1 cm (W) from front of lens in Macro
  • EXPOSURE CONTROL
    • Metering modes         Evaluative (linked to Face Detection AF frame), Centre-weighted average, Spot (centre)
    • AE Lock            Yes
    • Exposure Compensation         +/- 2 EV in 1/3 stop increments.
    • Enhanced i-Contrast for automatic dynamic range correction
    • ISO sensitivity AUTO, 100, 200, 400, 800, 1600
  • SHUTTER
    • Speed  1 – 1/2000 sec. (factory default)
    • 15 – 1/2000 sec. (total range – varies by shooting mode)
    • WHITE BALANCE
    • Type    TTL

Canon IXUS 140

MRSG has two small and and ligthweigth IXUS 140 as sensors attached in the small quadcopters IRIS and IRIS+.

The Canon IXUS 140 (also known as the Canon PowerShot ELPH 130 IS) is a new camera in the IXUS range, featuring a 8x optical zoom lens with a focal range of 28-224mm.

The 16 megapixel Canon 140 offers built-in wi-fi connectivity, the DIGIC 4 image processing engine, an optical Image Stabilizer, a 3 inch LCD screen, and a Smart Auto mode which detects 32 different scenes.

Specifications

  • IMAGE SENSOR
    • Type    1/2.3 type CCD
    • Effective Pixels           Approx. 16.0M
    • Colour Filter Type       Primary Colour
  • IMAGE PROCESSOR
    • Type    DIGIC 4 with iSAPS technology
  • LENS
    • Focal Length   5.0 – 40.0 mm (35 mm equivalent: 28 – 224 mm)
    • Zoom   Optical 8x
    • ZoomPlus 16x
    • Digital Approx. 4x. (with Digital Tele-Converter Approx. 1.6x or 2.0x and Safety Zoom ¹). Combined Approx. 32x ¹
    • Maximum f/number   f/3.2 – f/6.9
    • Construction    8 elements in 7 groups
    • (1 double-sided aspherical lens)
    • Image Stabilisation    Yes (lens shift-type), 3-stop (Canon standard). Intelligent IS
  • FOCUSING
    • Type    TTL
    • AF System/ Points      AiAF (Face Detection / 9-point), 1-point AF (fixed to centre)
    • AF Modes        Single, Continuous (Auto mode only), Servo AF/AE ¹, Tracking AF ¹
    • AF Point Selection      Size (Normal, Small)
    • AF Lock            On/Off Selectable
    • AF Assist Beam          Yes
    • Closest Focusing Distance      1 cm (W) from front of lens in macro
  • EXPOSURE CONTROL
    • Metering modes         Evaluative (linked to Face Detection AF frame), Centre-weighted average, Spot (centre)
    • AE Lock            On/Off Selectable
    • Exposure Compensation         +/- 2 EV in 1/3 stop increments.
    • Enhanced i-Contrast for automatic dynamic range correction
    • ISO sensitivity*           AUTO, 100, 200, 400, 800, 1600
  • SHUTTER
    • Speed  1 – 1/2000 sec. (factory default)
    • 15 – 1/2000 sec. (total range – varies by shooting mode)
    • WHITE BALANCE
    • Type    TTL

Additionally, MRSG has access to various multispectral and modified cameras. These are:

RedEdge® by MicaSence, is a camera that simultaneously captures five discrete spectral bands, enabling the creation of tailored indices for customized applications.

Has a global shutter design that creates distortion-free images on every platform. A variety of interface options including stand-alone mode, serial, Ethernet, and Wi-Fi, give RedEdge integrators expanded flexibility. RedEdge's Downwelling Light Sensor (DLS) enables measurement of ambient light conditions during flight for more accurate data in varying light conditions.

Basic Specifications

  • Weight 150 g
  • Dimensions 12.1 cm x 6.6 cm x 4.6 cm (4.8” x 2.6” x 1.8”) Power 5.0 V DC, 4 W nominal
  • Spectral Bands Narrowband: Blue, Green, Red, Red Edge, Near IR
  • Ground Sample Distance 8.2 cm/pixel (per band) at 120 m (400 ft.) AGL
  • Capture Speed 1 capture per second (all bands), 12-bit RAW

Spectral Bands Band Number Band Name Center Wavelength (nm) Bandwidth FWHM (nm)  1 Blue 475 20 2 Green 560 20 3 Red 668 10 4 Near IR 840 40 5 Red Edge 717 10

Other cameras:

A modified Canon camera for NDVI surveys: Canon ENDVI (MaxMax) is able to capture Enhanced Normalized Difference Vegetation Index (ENDVI), d e s i g n e d for Vegetation Stress (12.1 megapixels at 4000 x 3000 pixels)