imajbox®:
All integrated, portable & standalone survey solution

Portable and accurate transportation network mobile mapping solution with high resolution imagery

Navigation and availability of positioning:

Position is obtained by post processing all collected data :GNSS, IMU, imagery and Doppler radar (optional sensor) hybridized in an Extented Kalman Filter. It provides an accurate position and orientation for every image captured by the imajbox® in almost all GPS reception conditions (dead reckonning).

In order to ensure a good quality of positioning and orientation of the images we developed a specific inertial model for every kind of transportation mode.

This inertial model makes possible to cover in an optimal way zones where GPS signal is masked: dense vegetation cover, structures, etc.

• Post process navigation for car / trucks (roadway survey) - included with imajbox
• Post process navigation train (railway survey) - optional
• Post process navigation for boat (waterways survey) - optional

Positioning accuracy:

• Absolute positionning :

  - 1 m CEP* in planimetry, in open sky or with dead reckonning under 20s**
  - 50 cm DRMS in planimetry with optional dGPS post-processing***

• Measurement relative accuracy in 3D : 3%

* CEP : Circular Error Probability, 1 m CEP with SBAS corrections availability (EGNOS, WAAS, GAGAN, MSAS) In zones where no corrections are available, a DGPS post processing is possible >>

**In case of GNSS longer outage situations the Doppler radar (optional) can maintain this level of accuracy More information >>

*** This module works with the RINEX files provided by a reference station whose instantaneous distance to the rover should not exceed the 30km (20 miles). More information >>

Imajtrack : organize and control your survey

PC software delivered with imajbox

Installed on a laptop connected to the imajbox via the serial port, imatrack track itineraries surveyed with imajbox in real time. You can overlay any kind of cartographic layer, control the start and stop of the imajbox, check the GNSS quality reception and enter data during the survey.

This tool is designed to organize systematic survey.

• Get the track of your survey to control your itinerary.
• Real time organizer of your survey
• Check your itinerary and control the covered places

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Optional sensor: Odometer - Doppler radar

To address specific situations : long GPS outage, very dense urban environement or long tunels, Imajing proposes an optional self-contained sensor that provides accurate absolute speed and distance information in any kind of navigation environment:

The Doppler radar.

This sensor can be easily mounted on the side of the vehicle and directly plugged into the imajbox.

Radar based speed measurements improve the accuracy of the speed estimation and guarantee a precise positioning in any kind of situations.

The additional Doppler radar works with no contact, therefore imajbox remains a portable mobile mapping system which can be mounted in a few minutes.

Optional post process : dGPS post - process module with RINEX files

Thanks to this optional module of differential GPS (dGPS) post-processing , measurements from an external ground reference station can be exploited in order to improve positioning accuracy down to 50 cm DRMS or better.

This module works with the RINEX files provided by a reference station whose instantaneous distance to the rover should not exceed the 30km (20 miles).

Both dGPS code-based and kinematic phase-based position estimation modes are available and can be applied any time after the survey.