All integrated, portable & standalone survey solution

imajbox applications

Data and images collection for road, rail and waterways.

In a car : imajbox can be installed inside or outside the vehicle. According items to collect, you can point the camera forward, aside or backward of the vehicle.
In a train: installed in a few minute, imajbox is particularely adapted to opportunistic survey in train. Behind the wind-shield and battery powered, it can be installed very quickly in any commercial train.
On a boat : a fast and efficient way to survey riversides and banks.

imajbox specifications

Positioning technology:	GNSS receiver : GPS L1, SBAS, GALILEO, high sensitivity receiver IMU : 3 gyroscopes, 6 accelerometers, full auto-calibration Navigation solution is obtained by loose or tight hybridization of sensors data in an extended Kalman filter. High integrity is obtained by coupling GNSS, inertial, image tracking and multi-path rejection. Continuous positioning (dead reckoning) in case of loss of GNSS visibility. The algorithm are integrating multiple outlier detection and intelligent satellite selection to ensure best accuracy in all conditions. Optional module : single or double difference DGPS using RINEX source from ground reference station.
	Absolute positionning accuracy : - GNSS Standalone mode: 1.5 to 2.5 m(*) - With SBAS corrections : 1 m CEP(*) (**) - With dGPS post-process : 0.5 m DRMS(*) (***) (*) In 2D, in open sky or with dead reckonning under 20s. In case of GNSS longer outage situations the Doppler radar (optional) can maintain this level of accuracy. See optional modules (**) In zones where no corrections are available, a DGPS post processing is possible. See optional modules (***) 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). See optional modules Measurement relative accuracy in 3D :3 % (1 cm to 5 cm, at 10 meters from camera) Slope measurement (combining GNSS and barometer)
Imaging	5 megapixels CCD sensor Resolution : 2448 * 2050 Frame rate : time based or distance based (adjustable from 1 to 10 meters) Optimaj technology is conceived to optimize the result obtained from a camera sensor by maximizing the readability of an image whatever acquisition conditions are. Optimaj combines 14bits image processing, contour detection, optimal compression in order to deliver bright, clear, natural color images with maximal depth of field.  Optimaj technology is included in imajbox® 5 MP CCD camera to enable a perfect readability of details.
Data & storage	- Data volume : 100 to 200 MB/km (according to frame rate setting) - USB2 media, FAT 32
Survey speed	Maximum survey speed : 150 km/h - 90 mph

 

imajbox - All in one technology

Flight case imajbox including :

1 imajbox Containing: - GNSS receiver, 50 channels GPS L1 C/A, Galileo, SBAS - IMU (Inertial Measurement Unit) MEMS including 6 accelerometers, 3 gyrometers, 1 magnetometer 3 axis, 1 barometer - 5 mega pixels CCD, high resolution optic with 82° horizontal view angle Cable to cigarette lighter Magnetic antenna with 3 meters cable 1 fast USB key 32 Go Wind shield support : 1 aluminium mounting plate with 12 helicoils allowing almost any mounting configuration 3 high résistance suction pads

Softwares and documentation included

• imajbox configuration editor
• imajtrack : tracking software that can be used on a laptop for real time tracking and control during survey, uses the imajbox rs232 connector.
• imajbox post processing module (road navigation model)
• pdf documentation (en / fr / sp)

Single or double difference dGPS post - processing module

Our dGPS algorithm are using ground reference station measurements in RINEX format.

Absolute Positioning accuracy gets to 50 cm DRMS or better according to distance from station.

Both dGPS code-based and kinematic phase-based position estimation modes are used.

Double difference correction enable removing time bias both on the reference station and the imajbox.

Inertial models

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 train (railway survey)
• Post process navigation for boat (waterways survey)

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.

 

Benefits

• Light: carrying Case all included 2.5 kg (5,5 lbs), imajbox: 500g (1,1 lbs)
• Simple: configuration on the storage media, single button to launch the survey, integrated system avoiding any wiring, automatic adjustments: exposure, white balance, focus calibration. Can be operated by unskilled personnel. A single person can carry out a data collection (no operator needed).
• Autonomous: requires no computer or Internet connection, powered by battery or cigarette lighter.
• Efficient: allows continuous acquisition for systematic survey, depending on the storage media it is possible to produce a few hundred to several thousand kilometers continuously
• Powerful: automatically manages the acquisition of sensors (gyros, accelerometers, GPS, barometer, imaging) to calculate an accurate position and orientation solution in any mounting conditions, orientation and speed, and any environment (rural, urban, highway, tunnel, high or low speed)
• Precise : raw data (IMU + GPS + Imaging) processed by proprietary algorithms based on Kalman filter (EKF). Can exploit sources of differential corrections (dGPS), additional speed information (Doppler Radar). Optimize the trajectory in any GPS reception conditions for sustained accuracy.
• Cost-effective: 3 to 5 time cheaper than similar solutions, easy and fast production thanks to highly integrated design and focus on simplicity for the user. Quickly amortized by the quality and quantity of data that can be produced.