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Bad Elf GNSS Surveyor
Bluetooth GNSS Receiver & Datalogger with Barometric Sensor
Perfect for iOS/Android/Windows/Mac applications that need 1 meter accuracy using U-BLOX SBAS+PPP
Also supports differential GPS (DGPS) using RTCM 2.3 correction messages

Bad Elf, in collaboration with HPRTK is pleased to provide owners of a GNSS Surveyor 1 year of FREE access to HPRTK's nationwide DGPS service. HPRTK provides DGPS corrections over 100% of the United States and most of southern Canada. More info

The Bad Elf GNSS Surveyor delivers ~1-meter positioning out of the box to the iPad for use in GIS, mapping, agriculture, and survey activities.  The GNSS Surveyor can also stream raw satellite data to applications, which can then implement their own differential GPS or RTX algorithms to achieve precise positioning on the order of 10-50 cm via post processing.

GIS/Mapping Features

  • Stationary high precision GNSS as low as 1m out of the box with PPP in regions with SBA coverage
  • Post-processing support via RINEX conversion available in the Bad Elf app
  • Differential GPS (DGPS) supported using Internet delivered RTCM 2.3 via built-in NTRIP client.
  • 56 channel receiver supports GPS (US) and QZSS (Japan) constellations with SBAS
    (WAAS/EGNOS/MSAS), or GLONASS (Russia)
  • Obtain altitude from GPS or from the built-in barometer, which can be calibrated to a known altitude or  pressure
  • No internet connection or monthly subscription required

Bluetooth GPS Features

  • Sample rate configurable to 10Hz
  • View GPS + GLONASS status quickly with the backlit LCD
  • All day battery life allows you to track for up to 35 hours (24 hours when streaming over Bluetooth)
  • Log up to 5 hours of raw satellite data directly on your GNSS Surveyor
  • Access data logs directly from any PC or Mac using the included USB cable. GPS appears just like a USB thumb drive
  • USB connectivity to PC or Mac provides streaming data, raw or NMEA
  • Quickly acquires satellite lock without cell tower assistance. Hot start time as quick as 1 second
  • IPX4 splash resistance makes this device ready for outdoors.

GPS Technical Specs:

  • < 1 meter stationary accuracy with SBAS+PPP (In ideal conditiions, unobstructed view, with SBAS lock, device allowed to settle for at least 2 minutes)
  • 2.5 meter accuracy while in motion
  • 60,000ft/18,000m maximum altitude
  • 1000mph/1600kph maximum speed
  • Up to 10Hz position update rate
  • Fast GPS lock times (45 secs or less)
  • 56-channel u-blox7 engine - GPS L1 C/A, GLONASS L1 FDMA, QZSS L1 C/A (Navigation possible on GPS/QZSS or GLONASS, simultaneous operation not available)
  • RTCM support (via 3rd party apps and SDK)
  • SBAS/WAAS/EGNOS/MSAS
  • Barometer for barometric altitude
  • Bright yellow enclosure to find easily outdoors

 

Bad Elf GPS Pro Screen Bad Elf GPS Pro Screen Bad Elf GPS Pro Screen

App Support. The GNSS Surveyor works out of the box with all location services aware iOS apps, but requires custom integration using the Bad Elf SDK to access the advanced data and features available.  Bad Elf has begun working with several developers to support the GNSS Surveyor directly.  If you have an app and would like to support the GNSS Surveyor, please contact support today. 

Affordable & Simple to use.  At Bad Elf, we strive to create high quality, dependable products consistent with Apple's philosophy of "It just works!" Just turn on your Bad Elf GNSS Receiver and get to work. No complicated setup. Extra long battery life. No hassles.

Great Products. World-Class Service.  Need assistance? Bad Elf works hard to provide world-class customer service. If you have questions or concerns, please ask.

ACCURACY STATEMENT

Bad Elf performs a variety of controlled tests on each product to test expected performance. Factors such as sattelite geometry, multipath, environmental conditions are considered in our testing process. Statements of accuracy are in ideal, or near ideal conditions, using best practices for field data collection.

GPS+PPP+SBAS ACCURACY

The GNSS Surveyor is capapble of producing 1 meter CEP positional accuracy using GPS+PPP+SBAS. uBlox states that "PPP technology is made possible by stabilizing measurements of the distance between GNSS satellites and the receiver (pseudo-ranges) using carrier phase tracking. Additional accuracy is achieved from ionospheric correctional data received from satellite-based augmentation systems."

The image below represents a sample of what one can expect when using a GNSS Surveyor statically placed over a fixed location for 15 minutes. The center of the circle represents a know surveyed location that all of the measurements are calculated from. The requisite setup for this configuration includes:

  • Greater than 6 satelites visible and locked
  • SBAS signals being received and SBAS sattelites locked
  • Clear view of the sky above 15 degrees from the horizontal

badelf gnss position
Conditions and results: Avg NSV=7, CEP (0.52m), 2DRMS @95% (1.26m)

DGPS ACCURACY

The GNSS Surveyor is capapble of producing 1 to 1.5 meters (CEP) positional accuracy using DGPS and RTCM 2.3. Differential corrections are Code-Phase GPS corrections and require a nearby reference station sending data over NTRIP.

The image below represents a sample of what one can expect when using a GNSS Surveyor statically placed over a fixed location for 15 minutes. The center of the circle represents a know surveyed location that all of the measurements are calculated from. The requisite setup for this configuration includes:

  • Greater than 6 satelites visible and locked
  • RTCM 2.3 feed active for at least 2 minutes
  • Clear view of the sky above 15 degrees from the horizontal

badelf gnss position
Conditions and results: Avg NSV=7, CEP (1.09m), 2DRMS @95% (2.72m)

STAND ALONE ACCURACY

Accuracy in non-SBAS regions or using GLONASS instead of GPS is typically between 2-2.5m CEP for static occupations. Stand alone performance is measured using the following parameters:

  • Greater than 6 satelites visible and locked
  • Clear view of the sky above 15 degrees from the horizontal
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User Guide
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Bad Elf

Bad elf GNSS survayor

In the Box:
• Bad Elf GNSS Surveyor Device
• 3ft (90cm) miniUSB cable for charging
• 12-24V DC vehicle USB charger

• Detachable neck lanyard

User's manual

Made for iPhone, iPad, iPod

Bluetooth

Compatibility:
• iPod touch (2nd generation and newer
• iPhone (3G and newer)
iPad (original and newer)
• iPad mini (original and newer)

• Android & Windows 10

Please note, to run the Bad Elf GPS App, your device must support iOS 8.0+

Compatible Apps:
Find them here

Product Specs:
• MiniUSB port for charging and ElfPort expansion
• 128x96 dot LCD screen with backlight
• 200+ hour datalogger memory
• Upgradable firmware
• Dimensions: 3" x 2.4" x 0.7" (76.5mm x 61.5mm x 17.5mm)
Weight: 3.2 oz (90 grams)

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Bad Elf GNSS Surveyor

BE-GPS-3300

Bad Elf | GNSS Surveyor | BE-GPS-3300 | iPhone iPad iPod

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