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.The use of theselocators in peacetime could be deemed negligent in court" Vertical difference or gradiometer type locators are inherently less sensitive to anomalies from buriedUXO than are total field intensity instruments." In areas of very low geological magnetic noise, the depth to which a given target may be detected witha TM-4 is about 5 times greater than that using an analogue system, and up to 3.5 times greater thanwhen using the CAST system." In magnetically noisy areas, the depth to which a target may be detected with a TM-4 must always bemore than 1.5 times greater than when using an analogue system, and it may be several times more byvirtue of the use of digital signal enhancement.The detection depth using the TM-4 is up to 2.5 timesgreater than that when using the CAST system in these conditions." In all noise situations, the depth to which exploration for a given size of target has been effective, canonly be quantitatively defined from digital data." The TM-4 coverage rate of four hectares per day on foot (and very much more where vehicle accesspermits) is serval times greater than can be achieved with either the CAST or analogue systems." Computer aided interpretation of image processed; digital data can take place in a favourableenvironment and involve input from the experience of more than one operator.In other words, theinterpretation is not dependent upon the concentration of a single field operator who may be workingunder adverse conditions." A permanent, digital record of the search data (before and after clearance if required) providesverification of the thoroughness and effectiveness of the search." The confidence level at which UXO can be considered all to have been detected and removed can bespecified.The search depth to which such confidence applies varies with projectile size and localgeological conditions but in each search area the assurance level can be quantitatively defined by wayof a single graph.18 Figure 7.An isoplot image of magnetic anomalies measured with a TM-4 magnetometer over a five inch rockethead (largest anomaly) and four BDU-33 practice bombs buried at two metres depth.One BDU-33 wasoriented N-S, one E-W and tow were vertical.19 Figure 8 An Isoplot of magnetic anomalies measured with a TM-4 magnetometer over a contaminated World WarII artillery range20 Figure 9.A colour representation of the area within a World War II artillery range shown atFigure 8 after image processing the data21 Figure 10.An Isoplot showing a TM-4 record after a contaminated area had been cleared.The only anomalies remainingwere confirmed to be due to residual rust flakes shed from a car body dumped on the site many years ago.Modern analog magnetometer "anomaly"Ukrainian magnetometer is not inferior to Western counterparts - a pedestrian magnetometer "anomaly" is a precisionmagnetic field and measuring devices such as portable and designed to measure the absolute value of the Earth'smagnetic field.The main application area - high-performance terrestrial magnitorazvedochnyh work, carryingout pedestrian ground magnetic survey, the search of magnetic anomalies (with the possibility of accumulationof the results for further processing on the computer), including in difficult climatic conditions.Search features:Car (1 ton) of 10 m.Ship (1000 tons) 30 m.Pistol 1 m.Tube (30 cm) 6 pmhttp://250.org.ua/news.php?extend.51http://propribor.org.ua/shop/UID_333.html
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