b0a1993169
NMEA-0183 语句解析器，含 21 个语句类型 codec 与配套单元测试。 - codecs/：APB/BWC/DBT/GGA/GLL/GRMT/GSA/GSV/HDG/HDM/HDT/MWV/RDID/ RMB/RMC/ROT/RSA/TXT/VTG/VWR/ZDA - test/：各 codec 对应的 mocha 用例 - .github/workflows/：node与 npm-publish 流水线 许可证：MIT（原作者 James Penn）
51 lines
1.4 KiB
JavaScript
51 lines
1.4 KiB
JavaScript
/*
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=== RMB Recommended Minimum Navigation Information ===
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To be sent by a navigation receiver when a destination waypoint is active.
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------------------------------------------------------------------------------
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1 2 3 4 5 6 7 8 9 10 11 12 13 14
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$--RMB,A,x.x,a,c--c,c--c,llll.ll,a,yyyyy.yy,a,x.x,x.x,x.x,A*hh
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------------------------------------------------------------------------------
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Field Number:
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1) Status, V = Navigation receiver warning
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2) Cross Track error - nautical miles
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3) Direction to Steer, Left or Right
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4) FROM Waypoint ID
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5) TO Waypoint ID
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6) Destination Waypoint Latitude
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7) N or S
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8) Destination Waypoint Longitude
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9) E or W
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10) Range to destination in nautical miles
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11) Bearing to destination in degrees True
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12) Destination closing velocity in knots
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13) Arrival Status, A = Arrival Circle Entered
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14) Checksum
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*/
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exports.TYPE = 'nav-info-waypoint';
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exports.ID = 'RMB';
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exports.decode = function(fields) {
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return {
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sentence: exports.ID,
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type: exports.TYPE,
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status: fields[1] == 'V' ? 'warning' : 'valid',
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crossTrackError: +fields[2],
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steer: fields[3],
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fromWaypoint: fields[4],
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toWaypoint: fields[5],
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lat: fields[6],
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latPole: fields[7],
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lon: fields[8],
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lonPole: fields[9],
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range: +fields[10],
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bearing: +fields[11],
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vmg: +fields[12],
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arrived: fields[13] == 'A' ? true : false
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};
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} |