Digital beacon asymmetry and quantization compensation
A method, apparatus for reducing errors in a plurality of beacon beams is disclosed. The method comprises the steps of computing quantized channel weights Wc from channel weights Wc for at least some of the channels; estimating the quantization error DeltaBa for each of the beacon beams from a diffe...
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| creator | WANG HANCHING G HSU CHIHIEN |
| description | A method, apparatus for reducing errors in a plurality of beacon beams is disclosed. The method comprises the steps of computing quantized channel weights Wc from channel weights Wc for at least some of the channels; estimating the quantization error DeltaBa for each of the beacon beams from a difference between the channel weights Wc and the computed quantized channel weights Wc; and adding the estimated quantization error DeltaBa to the beacon beams. Similarly, a beacon biases equivalent to the beacon asymmetry error can be computed by the ground beacon beam forming software and uploaded to the on-board software for error compensation. The apparatus comprises one or more means, such as a processor communicatively coupled to a memory storing instructions for performing these operations. |
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The method comprises the steps of computing quantized channel weights Wc from channel weights Wc for at least some of the channels; estimating the quantization error DeltaBa for each of the beacon beams from a difference between the channel weights Wc and the computed quantized channel weights Wc; and adding the estimated quantization error DeltaBa to the beacon beams. Similarly, a beacon biases equivalent to the beacon asymmetry error can be computed by the ground beacon beam forming software and uploaded to the on-board software for error compensation. The apparatus comprises one or more means, such as a processor communicatively coupled to a memory storing instructions for performing these operations.</description><language>eng</language><subject>AIRCRAFT ; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ; AVIATION ; COSMONAUTICS ; 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 ; PERFORMING OPERATIONS ; PHYSICS ; RADIO DIRECTION-FINDING ; RADIO NAVIGATION ; TESTING ; TRANSMISSION ; TRANSPORTING ; VEHICLES OR EQUIPMENT THEREFOR</subject><creationdate>2008</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=20081104&DB=EPODOC&CC=US&NR=7447170B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20081104&DB=EPODOC&CC=US&NR=7447170B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WANG HANCHING G</creatorcontrib><creatorcontrib>HSU CHIHIEN</creatorcontrib><title>Digital beacon asymmetry and quantization compensation</title><description>A method, apparatus for reducing errors in a plurality of beacon beams is disclosed. 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The method comprises the steps of computing quantized channel weights Wc from channel weights Wc for at least some of the channels; estimating the quantization error DeltaBa for each of the beacon beams from a difference between the channel weights Wc and the computed quantized channel weights Wc; and adding the estimated quantization error DeltaBa to the beacon beams. Similarly, a beacon biases equivalent to the beacon asymmetry error can be computed by the ground beacon beam forming software and uploaded to the on-board software for error compensation. The apparatus comprises one or more means, such as a processor communicatively coupled to a memory storing instructions for performing these operations.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AIRCRAFT ANALOGOUS ARRANGEMENTS USING OTHER WAVES AVIATION COSMONAUTICS 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 PERFORMING OPERATIONS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING TRANSMISSION TRANSPORTING VEHICLES OR EQUIPMENT THEREFOR |
| title | Digital beacon asymmetry and quantization compensation |
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