METHOD FOR THE HIGH ACCURACY GEOLOCATION OF OUTDOOR MOBILE EMITTERS OF CDMA CELLULAR SYSTEMS
A high-accuracy method for the geolocation, without the collaboration of th e network, of outdoor mobile emitters of a CDMA cellular system, based on the ability to distinguishing between line-of sight and reflected signals. The method employs time-of flight and angle-of arrival information in order...
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| creator | COLMAN, GEOFFREY WIGHT, JAMES S BROUSSEAU, NICOLE |
| description | A high-accuracy method for the geolocation, without the collaboration of th e network, of outdoor mobile emitters of a CDMA cellular system, based on the ability to distinguishing between line-of sight and reflected signals. The method employs time-of flight and angle-of arrival information in order to determine whethe r a signal received by each of two or more interceptors situated at different locations is line-of-sight or reflected. Time-of flight information is obtained with the aid of the reverse link of a mobile of interest. At those instances in time when the signal received at two or more interceptors is line-of sight, the location of the mobile can be accurately determined using conventional direction-finding techniques. Since the signal received by an interceptor from a mobile may be very weak, adaptive threshold digital signal processing techniques may be employed to control the probability of detectio n and the probability of false alarms. |
| format | Patent |
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The method employs time-of flight and angle-of arrival information in order to determine whethe r a signal received by each of two or more interceptors situated at different locations is line-of-sight or reflected. Time-of flight information is obtained with the aid of the reverse link of a mobile of interest. At those instances in time when the signal received at two or more interceptors is line-of sight, the location of the mobile can be accurately determined using conventional direction-finding techniques. Since the signal received by an interceptor from a mobile may be very weak, adaptive threshold digital signal processing techniques may be employed to control the probability of detectio n and the probability of false alarms.</description><language>eng ; fre</language><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES ; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES ; MEASURING ; PHYSICS ; RADIO DIRECTION-FINDING ; RADIO NAVIGATION ; TESTING ; TRANSMISSION ; WIRELESS COMMUNICATIONS NETWORKS</subject><creationdate>2006</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20060817&DB=EPODOC&CC=CA&NR=2497363A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20060817&DB=EPODOC&CC=CA&NR=2497363A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>COLMAN, GEOFFREY</creatorcontrib><creatorcontrib>WIGHT, JAMES S</creatorcontrib><creatorcontrib>BROUSSEAU, NICOLE</creatorcontrib><title>METHOD FOR THE HIGH ACCURACY GEOLOCATION OF OUTDOOR MOBILE EMITTERS OF CDMA CELLULAR SYSTEMS</title><description>A high-accuracy method for the geolocation, without the collaboration of th e network, of outdoor mobile emitters of a CDMA cellular system, based on the ability to distinguishing between line-of sight and reflected signals. 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Since the signal received by an interceptor from a mobile may be very weak, adaptive threshold digital signal processing techniques may be employed to control the probability of detectio n and the probability of false alarms.</description><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</subject><subject>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</subject><subject>MEASURING</subject><subject>PHYSICS</subject><subject>RADIO DIRECTION-FINDING</subject><subject>RADIO NAVIGATION</subject><subject>TESTING</subject><subject>TRANSMISSION</subject><subject>WIRELESS COMMUNICATIONS NETWORKS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2006</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyrEKwjAQgOEuDqK-w72Ag0YUx_N6aQKJB8l1KAilSJxEC_X9UcEHcPqH_5tXl8jqpAYrCdQxON84QKI2IXXQsAQhVC9nEAvSai0fGOXkAwNHr8opfxfVEYE4hDZggtxl5ZiX1ew23Key-nVRgWUlty7jsy_TOFzLo7x6wu3ueDB7gxvzB3kDMNExsQ</recordid><startdate>20060817</startdate><enddate>20060817</enddate><creator>COLMAN, GEOFFREY</creator><creator>WIGHT, JAMES S</creator><creator>BROUSSEAU, NICOLE</creator><scope>EVB</scope></search><sort><creationdate>20060817</creationdate><title>METHOD FOR THE HIGH ACCURACY GEOLOCATION OF OUTDOOR MOBILE EMITTERS OF CDMA CELLULAR SYSTEMS</title><author>COLMAN, GEOFFREY ; WIGHT, JAMES S ; BROUSSEAU, NICOLE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CA2497363A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre</language><creationdate>2006</creationdate><topic>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</topic><topic>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</topic><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</topic><topic>MEASURING</topic><topic>PHYSICS</topic><topic>RADIO DIRECTION-FINDING</topic><topic>RADIO NAVIGATION</topic><topic>TESTING</topic><topic>TRANSMISSION</topic><topic>WIRELESS COMMUNICATIONS NETWORKS</topic><toplevel>online_resources</toplevel><creatorcontrib>COLMAN, GEOFFREY</creatorcontrib><creatorcontrib>WIGHT, JAMES S</creatorcontrib><creatorcontrib>BROUSSEAU, NICOLE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>COLMAN, GEOFFREY</au><au>WIGHT, JAMES S</au><au>BROUSSEAU, NICOLE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR THE HIGH ACCURACY GEOLOCATION OF OUTDOOR MOBILE EMITTERS OF CDMA CELLULAR SYSTEMS</title><date>2006-08-17</date><risdate>2006</risdate><abstract>A high-accuracy method for the geolocation, without the collaboration of th e network, of outdoor mobile emitters of a CDMA cellular system, based on the ability to distinguishing between line-of sight and reflected signals. 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| language | eng ; fre |
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| subjects | ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING TRANSMISSION WIRELESS COMMUNICATIONS NETWORKS |
| title | METHOD FOR THE HIGH ACCURACY GEOLOCATION OF OUTDOOR MOBILE EMITTERS OF CDMA CELLULAR SYSTEMS |
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