{"title":"Jared D Tuinstra","description":null,"products":[{"product_id":"perimeter-security-and-intruder-detection-using-gravity-gradiometry-book-jared-d-tuinstra-9781249586968","title":"Perimeter Security and Intruder Detection Using Gravity Gradiometry","description":"Changes in the mass distribution around some point on the Earth's surface induce corresponding changes to the magnitude and direction of the gravity vector at that location. The nine-tensor derivative of the gravity vector, or gravity gradient, is sensitive to very small changes in the gravity vector. With some assumptions, continuous measurement of the gravity gradient using a gravity gradiometer (GI) can be used to determine the location of a mass change in the local area near the instrument. This investigation sought to determine the effectiveness, operating characteristics, and limitations of a physical perimeter security system that uses an array of GIs to detect and locate a human intruder. Results were obtained via computer simulations that utilized the closed form solution for calculating a gravity gradient given an object's size and mass, as well as industry-predicted future GI performance characteristics.","brand":"WoB","offers":[{"title":"- \/ - \/ INTERNAL","offer_id":53251827040529,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ NEW \/ INGRAM","offer_id":53251827335441,"sku":"NIN9781249586968","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/9781249586968.jpg?v=1773592544"}],"url":"https:\/\/www.worldofbooks.com\/en-gb\/collections\/author-books-by-jared-d-tuinstra.oembed","provider":"World of Books ","version":"1.0","type":"link"}