Columbus P-7 Pro Submeter (0.5 meter accuracy) USB and Bluetooth GNSS Receiver

  • $159.00 USD


Columbus P-7 Pro is an easy to use GNSS receiver which achieves submeter (0.5 meter) level of positioning. It can be used either by connecting to an usb port of your computer or connecting to your mobile device by bluetooth. P-7 Pro streams high accuracy positioning data to your GIS/GPS applications on smartphones, tablets and computers in real time.

P-7 pro parts

 

Features:

  • 0.5 meter accuracy
  • 5 Hz update rate
  • Dual-Frequency(L1 + L5) 
  • 6 constellations (GPS, GLONASS, Galileo, BeiDuo, QZSS and IRNSS)
  • Quad output interfaces (1 Bluetooth SPP +  1 Bluetooth BLE + 2 USB Serial Devices / COM ports)
  • Multi-platform compatible (Windows, MacOS, Linux, Android, IOS, iPadOS)

 

How accurate is the P-7 Pro?

The P-7 Pro can provide: horizontal direction 0.5m/CEP(50%); 1.5m/CEP(95%). It boasts lane-level positioning accuracy.

CEP refers to Circular Error Probable. 0.5m/CEP(50%)* means that the probability of the track points falling within a 0.5m radius is greater than 50%; 1.5m/CEP(95%)* means that the probability of the track points falling within a 1.5m radius is greater than 95% .

The P-7 Pro also has high absolute altitude accuracy with an error of only ±15 m*, comparable to the altitude measurement ability of a barometer.

*Data from testing in ideal open environments

P-7 pro Accuracy

 

Better performance than ever! Let's see how much improvement the P-7 Pro has compared to a Single-frequency GPS receiver!  

1. Low-speed driving track test

Test purpose: Record three consecutive times along the same route to evaluate the consistency of the low-speed driving track.

Test time: UTC 2022-05-28 18:54:32 ~ 19:01:53   |   Average speed: 6.9km/h (4.3mi/h)

Location: The external antenna is attached to the top of the vehicle.

Surroundings: Houses and trees are densely distributed nearby.

Click to download the original track file (NMEA format) >

P-7 Pro test 1

2. Low-speed driving track test

Test purpose: Record three consecutive times along the same route to evaluate the consistency of the low-speed driving track.

Test time: UTC 2022-05-28 19:05:17 ~ 19:11:24   |   Average speed: 13.5km/h (8.4 mi/h)

Location: The external antenna is attached to the top of the vehicle.

Surroundings: Houses and trees are densely distributed nearby.

Click to download the original track file (NMEA format) >

P7 Pro test 2

3. Driving test  

Test purpose: Drive back and forth on a single-lane road to see if it can distinguish left and right lanes

Test time: UTC 2022-05-28 19:24:27 ~ 19:29:00   |   Average speed: 20.1km/h (12.5 mi/h)

Location: The external antenna is attached to the top of the vehicle.

Surroundings: Houses and trees are densely distributed nearby.

Click to download the original track file (NMEA format) >

P-7 Pro test 3

 

Why can the P-7 Pro be so accurate?  

1. Dual-frequency

The P-7 Pro, which supports dual-frequency L1+L5, can simultaneously monitor signals on two different frequencies on the same satellite, compare and analyze the data, and correct ionospheric delay to eliminate errors and multipath interference caused by the atmosphere.

The positioning accuracy of the P-7 Pro can reach sub-meters.

P-7 Pro dual frequency

2. Multi-constellation positioning capability 

The P-7 Pro supports multi-constellation in the world: GPS L1 and L5; GLONASS L1; Galileo E1 and E5a; BeiDou B1; QZSS L1 and L5; IRNSS L5.

Compared with the Single-constellation GPS positioning system, the GNSS multi-constellation positioning system can ensure rapid and effective positioning at any location in the world, while improving positioning accuracy and reliability.

P-7 pro multi-constellation

 

How fast is the update rate? 

The answer is 5Hz. Compared with the 1Hz update rate, the 5Hz update rate can provide a smoother track, which is suitable for recording high-speed activities such as racing cars.

P-7 Pro 5Hz update rate

 

What needs a P-7 pro if the smartphone already has built-in GPS?

If using the built-in GPS of your mobile phone or tablet, usually you can have 5 meters accuracy and 1Hz refresh rate. By connecting the P-7 Pro to your smartphone or tablet,  you can achieve up to 0.5 meters accuracy and 5Hz refresh rate. 10 times better positioning accuracy.

P-7 Pro vs smartphone

 

Which OS P-7 Pro is compatible with?

The P-7 Pro has excellent multi-platform compatibility and is compatible with all most common operating systems. 

P-7 Pro OS compatible

(Attention for those who use IOS or iPadOS devices. Please make sure your app is in our p-7 Pro compatible list. If not, please do NOT buy.  P-7 Pro is not going to work with your IOS device.)

How many devices can concurrently connect to P-7 pro?

P-7 Pro supports Quad output interfaces.  (1 Bluetooth SPP +  1 Bluetooth BLE + 2 USB Serial Devices / COM ports). If utilizing all 4 interfaces, 4 devices can concurrently connect to a P-7 pro.

For example: When connecting one device by Bluetooth SPP and connecting another device  by USB/ Com port, both devices can simultaneously receive GNSS data from the P-7 Pro.

It is so convenience when using a P-7 pro for multiple purposes. 

P-7 Pro multi-connection

 

What Bluetooth does the P-7 pro support?

The P-7 Pro has built-in dual-mode Bluetooth, which supports BLE 5.1 and SPP 2.1.

The reliable range is more than 20 meters.

P-7 pro bluetooth SPP and BLE

 

If connecting by USB port, how many com ports are available?

When plug-in to a computer, P-7 Pro can be recognized as 2 serial / com ports. Both ports are independent, which means two programs can share a single P-7 pro without using a GPS proxy program. You got two GNSS receivers for the price of one.P-7 pro dual com ports

What is the dual-frequency active antenna and how to properly place it?

As a professional GNSS receiver, P-7 Pro comes with an external dual-frequency active antenna. The antenna can boost the reception of the satellite signal, resulting in more accuracy data output.

The antenna has a magnetic base that allows you to freely attach the antenna to the top of surveying poles, vehicle roofs and masts etc.

The external active antenna adopts a waterproof design, and the protection level is IP66, which can be used in all-weather conditions.

The track accuracy of the P-7 Pro is significantly affected by the placement. According to the scene, we recommend the following placement:

P-7 Pro placement

 

Technical Specs


Size and Weight:

p-7 pro size and weight

Ingress Protection*:

External Active Antenna IP66

* The external active antenna can work normally in all-weather environments. The main unit of the P-7 Pro is not waterproof.

Operating Temperature:

-20°C to 50°C / -4°F to 122°F

GNSS Performance:

1575.42Mhz (L1, C/A code)

1176.45Mhz (L5)

GPS (L1+L5), GLONASS(L1), Galileo (E1+E5a), QZSS (L1+L5), BeiDou(B1), IRNSS (L5), SBAS

Positioning Ability*:

Cold start: <34 seconds

Reacquisition : <2 seconds

Horizontal position accuracy: 0.5m/CEP(50%), 1.5m/CEP(95%)

Vertical position accuracy: ±15m

* Support "EPS Pro" technology. 1Hz mode. Data from testing in ideal open environments.

Output Sentences:

Protocol: NMEA 0183

Baud Rate (Default): 57,600bps

Messages: GNRMC, GNGGA, GNGSV, GNGSA (Default); GNGLL, GNVTG (Optional)

Geodesics: WGS84

Update Rate:

1Hz (Default), 5Hz

Bluetooth:

SPP 2.1

BLE 5.1

Range: >20m (65 feet)

Connectors: 

USB device: USB 2.0 Type-A

External Active Antenna connectors: SMA

Antenna feeder: 300cm / 9.8feet

Power: 

P-7 Pro: DC 5V / 100mA

External active antenna: DC 3.3V / 20mA

OS support: 

Windows XP or greater

Mac OS X v10.9 or greater

Linux 2.6.12 or greater

iOS 9.3 or greater

Android 7.0 or greater

iPad OS 13 or greater

 

Tool Downloads:

GPSWebShop Windows Software

 - GNSSTooKit for Windows                

  

 

 

Blogs:

 
 

How to use P-7 Pro on Android?

How to use P-7 Pro on Linux?

How to view the positioning information?

How to test the positioning accuracy of P-7 Pro?

 

  Q&A

Q1. Does the location data output from P-7 pro represent the location of the antenna or the main unit?
The P-7 Pro location data output represents the location of the antenna.

Q2. Why is there no data output sometimes when I connect the P-7 Pro by USB port?
If connected by USB port, the baud rate of P-7 Pro must be set to 57,600. If you connect using another baud rate, there will be no data output or output with wrong encoding.

Q3. Can the main unit of the P-7 Pro work without connecting the antenna?
No, the main unit of P-7 Pro can not work alone. It must connect to the antenna (which comes with the package) to operate properly.