{"product_id":"noaa-technical-report-nos-co-ops-national-oceanic-and-atmospheric-adminis-9781288991945","title":"NOAA Technical Report NOS CO-OPS 049: Ocean Systems Test and Evaluation Program: Initial Operational Deployment Report: Miros Air Gap Sensor and Laser","description":"The maritime industry depends on accurate bridge clearance or air gap measurements. Knowing \u003cbr\u003e the distance between the lowest point of a bridge (low steel) and the water surface helps to avoid \u003cbr\u003e the risk of a vessel's overhead allision with bridges, which increases as vessel size increases. The potential economic gains to be realized by both increased commerce and the avoidance of allisions are considerable, and as a result, the maritime industry has a clear requirement for air gap information. The potential users of air gap sensor data require continuous, real-time observations of the clearance beneath a bridge with an accuracy of  15 centimeters (6 inches). CO-OPS further \u003cbr\u003e reduces this accuracy requirement to  75 millimeters (3 inches) to maintain an initial level of \u003cbr\u003e quality assurance and considers the value to represent two standard deviations of the difference \u003cbr\u003e between the final system output and a reference observation. The system must provide useful observations of air gap every six minutes in real time, corrected for any sensor mounting offset on the bridge from low steel. It must operate in all weather conditions and survive in the hostile bridge environment, where vibration can be a significant issue.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e National Oceanic and Atmospheric Adminis\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1288991940\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781288991945\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Bibliogov\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 03\/25\/2013\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 64\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.29lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.69h x 7.44w x 0.13d","brand":"National Oceanic and Atmospheric Adminis","offers":[{"title":"Paperback","offer_id":48449479409919,"sku":"9781288991945","price":17.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_57648c53-d639-43d5-a5f9-899f6a6ee9a0.jpg?v=1777263570","url":"https:\/\/www.whiterainbookhouse.com\/products\/noaa-technical-report-nos-co-ops-national-oceanic-and-atmospheric-adminis-9781288991945","provider":"WR Book House","version":"1.0","type":"link"}