{"title":"全球定位系统:陆地和海底","authors":"L. V. Uffelen","doi":"10.1121/AT.2021.17.1.52","DOIUrl":null,"url":null,"abstract":"Introduction Imagine with me a pre-COVID world. We are at an Acoustical Society of America (ASA) meeting in, say, Chicago, IL. We’ve just enjoyed a stimulating afternoon session, and our brains are fried. We need to find a coffee shop for a chat and some caffeine. What’s the first thing we do? We quickly pull out our mobile phones and open a Yelp or Google Maps app to find a location within a five-minute walk of the conference venue with a fouror five-star review, and we are on our way, following turnby-turn directions until we reach the destination. This mapping solution is delivered courtesy of a Global Navigation Satellite System (GNSS).","PeriodicalId":72046,"journal":{"name":"Acoustics today","volume":"17 1","pages":"52"},"PeriodicalIF":0.0000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Global Positioning Systems: Over Land and Under Sea\",\"authors\":\"L. V. Uffelen\",\"doi\":\"10.1121/AT.2021.17.1.52\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Introduction Imagine with me a pre-COVID world. We are at an Acoustical Society of America (ASA) meeting in, say, Chicago, IL. We’ve just enjoyed a stimulating afternoon session, and our brains are fried. We need to find a coffee shop for a chat and some caffeine. What’s the first thing we do? We quickly pull out our mobile phones and open a Yelp or Google Maps app to find a location within a five-minute walk of the conference venue with a fouror five-star review, and we are on our way, following turnby-turn directions until we reach the destination. This mapping solution is delivered courtesy of a Global Navigation Satellite System (GNSS).\",\"PeriodicalId\":72046,\"journal\":{\"name\":\"Acoustics today\",\"volume\":\"17 1\",\"pages\":\"52\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acoustics today\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1121/AT.2021.17.1.52\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acoustics today","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1121/AT.2021.17.1.52","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Global Positioning Systems: Over Land and Under Sea
Introduction Imagine with me a pre-COVID world. We are at an Acoustical Society of America (ASA) meeting in, say, Chicago, IL. We’ve just enjoyed a stimulating afternoon session, and our brains are fried. We need to find a coffee shop for a chat and some caffeine. What’s the first thing we do? We quickly pull out our mobile phones and open a Yelp or Google Maps app to find a location within a five-minute walk of the conference venue with a fouror five-star review, and we are on our way, following turnby-turn directions until we reach the destination. This mapping solution is delivered courtesy of a Global Navigation Satellite System (GNSS).