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MALÅ MIRA System

Operating Manual v. 1.1

19-001034

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Summary of Contents for MIRA

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

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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