Farmer/ Land Owner

 No more ATV/ walk the field !  Hidef Camera options and Video Zoom in..  Your land, your crop progress, your fences & resources


 Find your Cattle, Deer ?  your land security ?  crop leaf health ? pest damage ? wet/dry patches ?

See damaged silos ? roofing ? .. fences & predator intrusions, check corn feeder levels in deep snow, Quicker than a ATV ride ?  Safer ? warmer !  

Smallholdings to large scale Agricultural / Ranch operations ..      Agricultural drones and UAVs .. 

1000 Acres ? .. with accuracy you can conclude that maybe ONLY 150Acres need more fertilizer/irrigation- Save Thousands.  Higher Resolution NDVI/ Leaf Health mapping from a rotary UAV Drone, than fixed wing.

Infrared night vision options with Zoom..   Warm bodies on a cold night ..  fly on to look for missing livestock.

Weather & Dust resistant,  propeller OR fixed wing..  semi or full-auto pilot drones..  1 mile or more, 30 minute flight times, our fixed wing ranges to 20miles!

Flooding/Snow ? .. Deliver medicines/ packages/ VHF hand radio! to your neighbor with payload remote release and auto fly-home and auto land from original take off point.

See how serious scientific caliber & industrial grade Agricultural Drones quickly pay for themselves.

""One of our customers in New Zealand flies 5,436 acres per day and uses the GEMS sensor to estimate biomass of pastures used for grazing sheep. He has worked with a New Zealand University to develop an algorithm which estimates biomass using the GEMS NDVI imagery."

Email or Call  , Missouri  417 414 4963.
Your Midwest regional Drone center of Excellence for Advice & Support.

Our Official Multispectral Sensor Partner SentekSystems !

Imagine your uses ? .. Full crop damage evidence recording,   Seeing disease early, view the entire crop in detail.
Camera options -  Zoom capability is essential for inspections close ups from a safe Hover distance, internal gyroscopes stabilize the pictures...   

 ... NDVI mapping of leaf health for the entire acreage..

 Multispectural  which we install, proven sensor unit named  GEMS*   - most commonly used for crop/grain and vegetation health analysis by precision light wavelength mapping over large areas in greater resolution than any Satellite service, a 200ft or 400ft altitude field scan shows  practical and useful decision making detail. 

Definitions..  NDVI - vegetation Index.

NDVI - Explained.

Detailed information on Protector Interceptors partner SentekSystems INC's multispectral sensors which we commission install on the recommended platforms.  NDVI outputs for Corn, Irrigated Potato, Soybean,  and Weed detection.

Sentek Systems has been actively collaborating on nutrient management using the GEMS system with researchers at the University of Minnesota (i.e. Prof. David Mulla (corn), Prof. Carl Rosen (irrigated potato), Prof. Fabian Fernandez (corn), Prof. Daniel Kaiser (corn)) and has extended its collaboration in 2016 to include researchers at the University of Illinois (i.e. Prof. Emerson Nafziger (corn), Dr. Dennis Bowman (weed detection/classification)).


In 2015 Sentek Systems supported the UMN nitrogen rate and timing trials by collecting multi-spectral imagery at four UMN nitrogen trial test sites (i.e. Becker, Waseca, Clara City, and Lamberton) using the GEMS system and correlated GEMS airborne multi-spectral data with the UMN ground based measurements. We achieved very high coefficients of fit between GEMS airborne and UMN ground based measurements. We flew the nitrogen trial test sites once per week (i.e. weather permitting) and  synchronized airborne data collection dates and times with UMN ground based measurement sample dates and times.


Using the Sentek GEMS airborne multi-spectral imagery data we were able to predict (i.e. with very high coefficients of fit R^2) the UMN ground based measurements, including their Green Seeker, Crop Circle, and SPAD 502 Chlorophyll meter measurements. In addition, we had very high coefficients of fit between GEMS NDVI data and the UMN pre-plant nitrogen rates (i.e. were able to predict pre-plant nitrogen rates). In 10-15 minutes the airborne GEMS payload could collect imagery on every plant at a site with 80-120 test plots. The corresponding ground based measurements took hours or even days to collect (i.e. 30 leaf samples per row for each of the rows in 80-120 test plots at a given site).  The GEMS payload collected far more data (i.e. every leaf on every plant which yielded larger statistical sample sizes and statistically higher confidence levels) than the ground based sensors. If you are currently using or have plans to use ground based Green Seeker, Crop Circle, or SPAD 502 Chlorophyll meters to support nitrogen management decisions an airborne GEMS payload could certainly help streamline your services.


Question: We have looked at for the past two years and just haven’t been able to justify the cost, but I am hoping we can do 2-3 things, provide more accurate plant counts, plant health around V6 and get biomass/plant health at VT-R2 in corn. Any help with soybeans is bonus as we mainly scout them with dirt bikes to check for aphids weeds at V3-V5.

Response: GEMS is a multispectral VIS/NIR sensor consisting of dual simultaneously triggered 1.3 Megapixel global shutter cameras tightly integrated and time synchronized with inertial sensors and a carrier phase GPS receiver all on the same printed circuit board. The GEMS system has a continuous frame rate of 1.4 frames per second (i.e. 0.7 sec between images maintained continuously) and comes equipped with post processing software which stitches images together into RGB, NIR, and NDVI mosaics. The GEMS system computes the WGS-84 GPS coordinates of each image pixel. The GEMS VIS and NIR images are precisely aligned enabling the Normalized Difference Vegetation Index (NDVI) and other vegetation indices to be computed and aligned to sub-pixel level accuracy.

Plant health/crop stress are clearly visible in the GEMS RGB, NIR and NDVI imagery. For example, in the 2015 growing season in Illinois, there was excessive precipitation early in the season which leached nitrogen from the soil. The areas where nitrogen had leached from the soil were clearly visible in the GEMS imagery which enabled side dress nitrogen to be applied where it was most needed. Stress due to insufficient nitrogen is typically visible by V6-V8 in corn.

Regarding plant counts, the GEMS payload does not currently count the plants in a field. However, the resolution of the GEMS payload from altitudes of 400ft, 200ft and 100ft are 5.9 cm, 2.97cm and 1.48cm respectively. Hence the individual plants will be clearly visible in the imagery with the appropriate choice of platform altitude. With the appropriate choice of NDVI false color map, the individual plants can be made to stand out in bright red against a dark black soil NDVI value. The individual plants are aligned in straight rows as opposed to the weeds which tend to appear in clumps. The GEMS post processing software also has distance and area measuring tools that can assist with estimating plant counts.

Sentek has flown the GEMS payload at all vegetation growth stages in corn including: V1-V12, VT, and R1-R6. Plant health and crop stress are clearly visible with the GEMS payload at VT-R2. The GEMS payload does not directly provide an estimate of crop biomass although some GEMS users are estimating crop biomass using the GEMS payload. One of our customers in New Zealand flies 5,436 acres per day and uses the GEMS sensor to estimate biomass of pastures used for grazing sheep. He has worked with a New Zealand University to develop an algorithm which estimates biomass using the GEMS NDVI imagery.

The GEMS system natively produces 2-D RGB, NIR and NDVI orthomosaics using the post processing software that is included with the GEMS system. In addition, the GEMS system is integrated with and exports data to multiple third party software packages (i.e. Pix4D, Photoscan, PowerOfGround, and 3D Flow) for those users that would like to perform 3-D reconstructions. The University of Wisconsin is using GEMS payloads in their Geographical Information Systems (GIS) courses to collect multi-spectral imagery and the associated position and orientation data needed to produce 3D reconstructions and perform volumetric analysis. Texas A & M is using GEMS payloads in conjunction with Pix4D 3D reconstruction software to produce crop height maps for use in biomass estimation.

Regarding your question on scouting soybeans for aphids, Sentek has not conducted specific experiments for this application. However, if the aphids cause damage/stress to the soybeans which changes their color then the damage may be visible in the GEMS imagery.


The Sentek GEMS system has been integrated onto many multi-rotor, fixed wing and even manned aircraft platforms. The choice of drone, camera, and data processing is governed by multiple factors including: (1) the average size of the fields that you plan on flying; (2) the ground sampling distance (GSD) or resolution that is needed to perform the tasks; (3) the types of tasks and post processing analysis that you wish to perform; (4) work flow and the speed with which the post processing results are required; (5) total system cost including drone, camera payload, and post processing costs.

Knowing the average size of the fields that you wish to fly and the desired resolution will assist you with platform and sensor selection. For Serious usage Sentek recommends Serious Platforms as supplied and recommended by Protector Interceptor

Knowing your work flow will assist you in the choice of data processing. For example, if you plan to travel from field to field flying and collecting data, then it is important to rapidly know whether or not you have collected a good data set before moving on to the next field. In this case you will want to be able to post process your data rapidly at the fields edge before moving on to the next field.

The post processing software needed to produce 2-D RGB, NIR and NDVI orthomosaics is included in the price of a GEMS system that will be included in your UAV platform. With the GEMS system, there is no need to upload or download imagery to the cloud over slow and often unreliable communications links and there is no cloud computing, per acre, or recurring software licensing fees.

Over time, with some systems on the market today, third party post processing fees can easily exceed the price of the initial hardware. With the GEMS system, the data processing is done at the fields edge and the data remains securely in your hands.
 Hyperspectural which we can provide - although expensive and a scientific instrument

Windy areas and weather limits/ Rain/cold  ?        ... we advise on Weather Strength options 

How to fly ?   Easy, we can show you !          ... most Drones fly themselves and can follow GPS Waypoints.

Night Vision ?  Vision after a Weather event ?          ...  Infrared Cameras  FLIR  (forward looking infrared (HEAT sensors)

Want to map/ Survey your land  - thousands' $ lower cost than a Man powered survey ? 
 Consider a LIDAR  (Laser measuring light sensors ..  LIDAR feeds 3D images & maps straight into your Laptop. 

Deliver packages/medicine to your neighbor ?    Loadup..  fly.. land..  release package.. 
Talk to your neighbor !  ..  use our VHF/UHF Radio package as a low decibel PA System.

See Store for drone details.  

Auto pilot Take off,  Self Hover, Follows your fences, Self Land,...and return to home safely if problems.

You can also contract our services for some Agri applications.

Protector Interceptor INC supports most major commercial brands that suit our Customers needs to their satisfaction.