Large Scale Magnetic Field Measurements and Mapping

The paper i l l u s t r a t e s the most recent techniques i n the f i e l d o f l a rge-sca le magnetic measurements. The main problems r e l a t e d t o f i e l d mapping a re discussed. The development o f microelect ron ics dur ing the l a s t few years has created a r e v o l u t i o n i n magnetic measurement systems. Modular hardware and software as we l l as widely used i n d u s t r i a l standards have in f luenced the arc h i t e c t u r e o f measurement systems. The use o f embedded microprocessors i n the equipment and the a p p l i c a t i o n o f modern algori thms have improved the performance o f measurement probes and s i m p l i f i e d t h e i r c a l i b r a t i o n . A modern system a lso provides f a c i l i t i e s f o r onl ine analys is and d isp lay o f measurement res u l t s as wel l as e a r l y detect ion and i n d i c a t i o n o f equipment fau l t s .