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1.1 Unpacking and Inspection 

 

Great care should be taken when unpacking the equipment. Be sure to verify the contents shown on 
the  packing list  and inspect the equipment for any  loose parts or other damage. All packing material 
should be preserved in the event that any damage occurred during shipping. Any claims for shipping 
damage should be filed to the carrier. Any claims for missing equipment or parts should be filed with 
MALÅ Geoscience. 

 
 

1.2 Repacking and Shipping 

 

If original packing materials are unavailable, the equipment  should be packed with at least 80 mm of 
absorbing material. Do  not use shredded fibres,  paper wood,  or  wool,  as these  materials tend  to get 
compacted during shipment and permit the instruments to move around inside the package.  

 

1.3 MALÅ Geoscience Indemnity Clause 

 

Operators of MALÅ MIRA system or other GPR systems shall hold harmless, defend, and indemnify 
MALÅ Geoscience from and against any and all losses, liabilities, damages, injuries, claims, demands, 
costs and expenses or claims including claims by third parties arising out of the use or possession of 
the MALÅ MIRA GPR system. 

 

1.4 Important information regarding the use of this GPR unit 

 

According to the regulations stated in ETSI EN 302 066-1 (European Telecommunication Standards 
Institute): 

The control unit should  not be left ON  when  leaving the system unintended. It 
should always be turned OFF when not in use. 

The antennas should point towards the ground, walls etc. during measurement 
and not towards the air.  

The  antennas  should  be  kept  in  close  proximity  to  the  media  under 
investigation. 

 

 

Содержание MIRA

Страница 1: ...MAL MIRA System Operating Manual v 1 1 19 001034...

Страница 2: ...ormation regarding the use of this GPR unit 4 2 System components 5 2 1 The ProEx control unit 6 2 2 The MIRA option 6 2 3 Antennas 8 2 4 Positioning systems 9 2 5 Accessories 11 3 System set up 14 3...

Страница 3: ...pictures of the subsurface with a high resolution of subsurface features both in horizontal and vertical direction The MIRA systems are designed with new technology and protected by new patent applic...

Страница 4: ...hipment and permit the instruments to move around inside the package 1 3 MAL Geoscience Indemnity Clause Operators of MAL MIRA system or other GPR systems shall hold harmless defend and indemnify MAL...

Страница 5: ...nd processing rSlicer software Suitable vehicle or arrangement with antenna array on wheels for moving Power supply for the ProEx control unit and the antenna array 12V These different parts are expla...

Страница 6: ...ng care of the reading stacking buffering and transfer of data This will ensure undisturbed data throughput regardless of the number of channels used Internally this is implemented via a distributed d...

Страница 7: ...ansmitter trig lines The number of lines is dependent on how the system was ordered The MIRA option in Fig 2 5 is for maximum 10 receivers and transmitters The standard array option is equipped to han...

Страница 8: ...nges from 0 to approximately 6 m depth in non conductive ground These antennas have one power connector and one trig connector The receiver antennas are also equipped with a connector for the digital...

Страница 9: ...resulting 3D radar picture correct and reliable Centimetre accuracy is needed over the whole investigation site The MIRA system can be positioned by using a RTK GPS system or a self tracking laser th...

Страница 10: ...rism mounted on the antenna array when the MIRA system moves in the investigation area and a radio link communicates the data from the Total station to the MIRASoft See Fig 2 9 The Total station shoul...

Страница 11: ...ly be mentioned that temporary loss of tracking will not cause the data to be useless as long as start and end points of each swath are well defined Note A GPS is very effective when it works In order...

Страница 12: ...tening arrangement for the array box Power supply typically the generator has to be exchanged to one with higher current specifications Cables fuses and switches have to be installed Attatchment of ma...

Страница 13: ...centre line of the outmost channel Measuring wheel for control of the data acquisition Usually this is mounted on one of the wheels of the carrying vehicle but other designs are possible Power supply...

Страница 14: ...nector for data communication Ethernet cable Note This should be crossed to the control unit and straight from the antenna box to the computer 6 Connector for encoder wheel cable Fig 3 1 The main conn...

Страница 15: ...he two 25 DSUB connectors and secured by two screws on each side See Fig 3 4 Fig 3 4 Connection of the ProEx unit to the MIRA option IMPORTANT NOTE The interface between the main ProEx unit and the ar...

Страница 16: ...rain temperature variations etc However when a standardized package is purchased these kinds of practical issues will be taken care of by MAL Geoscience The cables between the antennas and the MIRA op...

Страница 17: ...n power for the whole set up is turned ON or OFF by switching the key on the external battery box shown in Figure 3 9 This will turn off the power to the antennas the ProEx control Unit the Spray pain...

Страница 18: ...he Total Station needs to be moved the same tie in points needs to be seen from the new location Place the prism on the antenna array in one of the spray mark holder with the 5 8 UNC thread see Fig 3...

Страница 19: ...the distance between the base and the rover needs to be several hundred meters during initialization Make all connections between the base antenna and the GPS base receiver Place the GPS rover antenna...

Страница 20: ...stopped The LED s 3 and 4 indicates no connection or error with steady or blinking red light Note The remote control should be connected prior the power of the MIRA antenna box is turned ON Note Whene...

Страница 21: ...until all data is correctly saved by MIRASoft then it turns off and LED 2 is starting to blink indicating that the system is ready for measurement again 8 It is possible to set markers whenever wante...

Страница 22: ...o help the operator to keep track of the measured swaths can be used on both sides of the standard antenna box see Figure 3 14 It is connected to a remote control and powered by a standard MAL battery...

Страница 23: ...antenna as close to the antenna box as possible during measurements especially on uneven ground Fig 3 15 Standard UNC thread on top of the spray marker holder The spray can marker box is seen in Figu...

Страница 24: ...to measure in two directions and look at the two different projects separately in rSlicer Fig 4 1 Example of measurement swaths for a smaller investigation area where all swaths are made in the same...

Страница 25: ...When selecting the point distance one should use a distance no longer than the channel spacing within the array To get good data for the radar and the positioning a suitable speed for a survey is rou...

Страница 26: ...orward and the encoder wheel send a signal to the ProEx unit to measure The array gathers data at every point interval specified in the MIRA Acquisition software and the operator should keep an eye on...

Страница 27: ...ioned for the new swaths As one swath is finished the measurement is stopped according to the MIRASoft manual the antenna array is moved back to the start position and a new swath is started This is c...

Страница 28: ...21 Fax 1 843 284 0684 E mail sales usa malags com MAL GeoScience China Room 2604 Yuan Chen Xin BLDG No 12 Yu Min Road Chao Yang District Beijing 100029 Phone 86 108 225 0728 Fax 86 108 225 0815 E mail...

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