COMMUNICATION DEVICE, COMMUNICATION SYSTEM AND POSITIONING METHOD
PROBLEM TO BE SOLVED: To provide a communication device, a communication system and a positioning method that can eliminate uncertainty equivalent to a maximum one code bit with respect to a distance detected by a GPS using a satellite.SOLUTION: According the present invention, a communication devic...
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| creator | TANAKA HIROSHI NISHI RYUZO ONO KENICHI |
| description | PROBLEM TO BE SOLVED: To provide a communication device, a communication system and a positioning method that can eliminate uncertainty equivalent to a maximum one code bit with respect to a distance detected by a GPS using a satellite.SOLUTION: According the present invention, a communication device 1a employing a MSK scheme as a modulation scheme for adding a signal to a radio wave comprises: a multiplier for an orthogonal demodulation of a reception signal; /2 phase shifter; a local oscillation oscillator; a low pass filter (LPF); a base band signal I that undergoes the orthogonal demodulation; a phase calculation part that calculates a tan(Q/I) from a base band Q signal; and a positioning calculation part that performs a positioning calculation from a phase calculation result. According to this configuration, from phase information varying from moment to moment, a distance where the radio wave reaches from each satellite is detected, so that there is no uncertainty (positioning error) that is equivalent to the maximum one code bit like a GPS positioning. Thus, a positioning scheme can be provided that does not exhibit the positioning error in principle. |
| format | Patent |
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According to this configuration, from phase information varying from moment to moment, a distance where the radio wave reaches from each satellite is detected, so that there is no uncertainty (positioning error) that is equivalent to the maximum one code bit like a GPS positioning. Thus, a positioning scheme can be provided that does not exhibit the positioning error in principle.</description><language>eng</language><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES ; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; GYROSCOPIC INSTRUMENTS ; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES ; MEASURING ; MEASURING DISTANCES, LEVELS OR BEARINGS ; NAVIGATION ; PHOTOGRAMMETRY OR VIDEOGRAMMETRY ; PHYSICS ; RADIO DIRECTION-FINDING ; RADIO NAVIGATION ; SURVEYING ; TESTING ; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><creationdate>2013</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=20131007&DB=EPODOC&CC=JP&NR=2013205281A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20131007&DB=EPODOC&CC=JP&NR=2013205281A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TANAKA HIROSHI</creatorcontrib><creatorcontrib>NISHI RYUZO</creatorcontrib><creatorcontrib>ONO KENICHI</creatorcontrib><title>COMMUNICATION DEVICE, COMMUNICATION SYSTEM AND POSITIONING METHOD</title><description>PROBLEM TO BE SOLVED: To provide a communication device, a communication system and a positioning method that can eliminate uncertainty equivalent to a maximum one code bit with respect to a distance detected by a GPS using a satellite.SOLUTION: According the present invention, a communication device 1a employing a MSK scheme as a modulation scheme for adding a signal to a radio wave comprises: a multiplier for an orthogonal demodulation of a reception signal; /2 phase shifter; a local oscillation oscillator; a low pass filter (LPF); a base band signal I that undergoes the orthogonal demodulation; a phase calculation part that calculates a tan(Q/I) from a base band Q signal; and a positioning calculation part that performs a positioning calculation from a phase calculation result. According to this configuration, from phase information varying from moment to moment, a distance where the radio wave reaches from each satellite is detected, so that there is no uncertainty (positioning error) that is equivalent to the maximum one code bit like a GPS positioning. Thus, a positioning scheme can be provided that does not exhibit the positioning error in principle.</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>GYROSCOPIC INSTRUMENTS</subject><subject>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</subject><subject>MEASURING</subject><subject>MEASURING DISTANCES, LEVELS OR BEARINGS</subject><subject>NAVIGATION</subject><subject>PHOTOGRAMMETRY OR VIDEOGRAMMETRY</subject><subject>PHYSICS</subject><subject>RADIO DIRECTION-FINDING</subject><subject>RADIO NAVIGATION</subject><subject>SURVEYING</subject><subject>TESTING</subject><subject>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2013</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHB09vf1DfXzdHYM8fT3U3BxDfN0dtVRQBUNjgwOcfVVcPRzUQjwD_YEiXn6uSv4uoZ4-LvwMLCmJeYUp_JCaW4GJTfXEGcP3dSC_PjU4oLE5NS81JJ4rwAjA0NjIwNTIwtDR2OiFAEAUMMroA</recordid><startdate>20131007</startdate><enddate>20131007</enddate><creator>TANAKA HIROSHI</creator><creator>NISHI RYUZO</creator><creator>ONO KENICHI</creator><scope>EVB</scope></search><sort><creationdate>20131007</creationdate><title>COMMUNICATION DEVICE, COMMUNICATION SYSTEM AND POSITIONING METHOD</title><author>TANAKA HIROSHI ; NISHI RYUZO ; ONO KENICHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2013205281A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2013</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>GYROSCOPIC INSTRUMENTS</topic><topic>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</topic><topic>MEASURING</topic><topic>MEASURING DISTANCES, LEVELS OR BEARINGS</topic><topic>NAVIGATION</topic><topic>PHOTOGRAMMETRY OR VIDEOGRAMMETRY</topic><topic>PHYSICS</topic><topic>RADIO DIRECTION-FINDING</topic><topic>RADIO NAVIGATION</topic><topic>SURVEYING</topic><topic>TESTING</topic><topic>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</topic><toplevel>online_resources</toplevel><creatorcontrib>TANAKA HIROSHI</creatorcontrib><creatorcontrib>NISHI RYUZO</creatorcontrib><creatorcontrib>ONO KENICHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TANAKA HIROSHI</au><au>NISHI RYUZO</au><au>ONO KENICHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>COMMUNICATION DEVICE, COMMUNICATION SYSTEM AND POSITIONING METHOD</title><date>2013-10-07</date><risdate>2013</risdate><abstract>PROBLEM TO BE SOLVED: To provide a communication device, a communication system and a positioning method that can eliminate uncertainty equivalent to a maximum one code bit with respect to a distance detected by a GPS using a satellite.SOLUTION: According the present invention, a communication device 1a employing a MSK scheme as a modulation scheme for adding a signal to a radio wave comprises: a multiplier for an orthogonal demodulation of a reception signal; /2 phase shifter; a local oscillation oscillator; a low pass filter (LPF); a base band signal I that undergoes the orthogonal demodulation; a phase calculation part that calculates a tan(Q/I) from a base band Q signal; and a positioning calculation part that performs a positioning calculation from a phase calculation result. According to this configuration, from phase information varying from moment to moment, a distance where the radio wave reaches from each satellite is detected, so that there is no uncertainty (positioning error) that is equivalent to the maximum one code bit like a GPS positioning. Thus, a positioning scheme can be provided that does not exhibit the positioning error in principle.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GYROSCOPIC INSTRUMENTS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SURVEYING TESTING TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
| title | COMMUNICATION DEVICE, COMMUNICATION SYSTEM AND POSITIONING METHOD |
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