Evolution of TEMPEST – Bird positioning

TEMPEST, a fixed wing time domain electromagnetic (TDEM) system, developed in 2000, has been applied to a range of exploration and mapping applications around the world. The systems’ versatility can be credited to its broad operational bandwidth, multifaceted software approach and distinctive calibration technique which ensures that it is able to capture and process early and late time ground responses. In the last decade the system has undergone a range of hardware and software developments with the aim of satisfying the changing landscape of geophysical exploration. Specific improvements have been made to improve the system’s ability to monitor and compensate for variations in system geometry. Inverse modelling and recent survey data are used to demonstrate the impact of system improvements on enhancing the system’s ability in a multitude of geophysical applications.