{"id":10897,"date":"2026-04-01T17:25:13","date_gmt":"2026-04-01T09:25:13","guid":{"rendered":"https:\/\/spherefixgnss.com\/?p=10897"},"modified":"2026-05-07T15:54:15","modified_gmt":"2026-05-07T07:54:15","slug":"surveying-done-and-positioning-synergy","status":"publish","type":"post","link":"https:\/\/spherefixgnss.com\/vi\/surveying-done-and-positioning-synergy\/","title":{"rendered":"V\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS: C\u00e1ch Spherefix c\u00e1ch m\u1ea1ng h\u00f3a s\u1ef1 ph\u1ed1i h\u1ee3p \u0111\u1ecbnh v\u1ecb"},"content":{"rendered":"
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blog<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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V\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS: C\u00e1ch Spherefix c\u00e1ch m\u1ea1ng h\u00f3a s\u1ef1 ph\u1ed1i h\u1ee3p \u0111\u1ecbnh v\u1ecb<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Ng\u00e0y 2 th\u00e1ng 4 n\u0103m 2026<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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T\u1eeb h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb \u00f4 t\u00f4 v\u00e0 theo d\u00f5i v\u1ecb tr\u00ed \u0111i\u1ec7n tho\u1ea1i \u0111\u1ebfn n\u00f4ng nghi\u1ec7p ch\u00ednh x\u00e1c v\u00e0 kh\u1ea3o s\u00e1t \u0111\u1ecba ch\u1ea5t, ch\u00fang ta coi vi\u1ec7c x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed t\u1ee9c th\u00ec v\u00e0 ch\u00ednh x\u00e1c l\u00e0 \u0111i\u1ec1u hi\u1ec3n nhi\u00ean trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y \u2014 t\u1ea5t c\u1ea3 \u0111\u1ec1u nh\u1edd v\u00e0o s\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa c\u00e1c v\u1ec7 tinh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb thu GNSS.
\u00cdt ai trong ch\u00fang ta d\u1eebng l\u1ea1i \u0111\u1ec3 suy ng\u1eabm v\u1ec1 s\u1ef1 ph\u1ed1i h\u1ee3p nh\u1ecbp nh\u00e0ng \u0111\u1eb1ng sau s\u1ef1 ti\u1ec7n l\u1ee3i n\u00e0y: m\u1ed1i li\u00ean k\u1ebft quan tr\u1ecdng gi\u1eefa c\u00e1c v\u1ec7 tinh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb thu GNSS.
M\u1ed9t quan ni\u1ec7m sai l\u1ea7m ph\u1ed5 bi\u1ebfn l\u00e0 c\u00e1c v\u1ec7 tinh g\u1eedi tr\u1ef1c ti\u1ebfp t\u1ecda \u0111\u1ed9 v\u1ecb tr\u00ed \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb \u2014 nh\u01b0ng th\u1ef1c t\u1ebf l\u00e0, c\u00e1c v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS ho\u1ea1t \u0111\u1ed9ng trong m\u1ed1i quan h\u1ec7 ph\u1ee5 thu\u1ed9c l\u1eabn nhau, v\u1edbi vai tr\u00f2 l\u1ea7n l\u01b0\u1ee3t l\u00e0 ngu\u1ed3n ph\u00e1t t\u00edn hi\u1ec7u v\u00e0 b\u1ed9 gi\u1ea3i m\u00e3 t\u00edn hi\u1ec7u.
C\u1ea3 v\u1ec7 tinh l\u1eabn thi\u1ebft b\u1ecb thu GNSS \u0111\u1ec1u kh\u00f4ng th\u1ec3 cung c\u1ea5p v\u1ecb tr\u00ed ch\u00ednh x\u00e1c m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp; khi k\u1ebft h\u1ee3p v\u1edbi nhau, ch\u00fang t\u1ea1o th\u00e0nh n\u1ec1n t\u1ea3ng c\u1ee7a H\u1ec7 th\u1ed1ng \u0110\u1ecbnh v\u1ecb V\u1ec7 tinh To\u00e0n c\u1ea7u (GNSS).
C\u00e1c b\u1ed9 thu GNSS ch\u1ea5t l\u01b0\u1ee3ng cao gi\u00fap ph\u00e1t huy t\u1ed1i \u0111a gi\u00e1 tr\u1ecb c\u1ee7a t\u00edn hi\u1ec7u v\u1ec7 tinh, v\u00e0 c\u00e1c b\u1ed9 thu GNSS Spherefix n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t \u0111\u1ed1i t\u00e1c l\u00fd t\u01b0\u1edfng cho v\u1ec7 tinh, n\u00e2ng kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ecbnh v\u1ecb l\u00ean m\u1ed9t t\u1ea7m cao m\u1edbi.
B\u00e0i vi\u1ebft n\u00e0y ph\u00e2n t\u00edch c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ed1t l\u00f5i c\u1ee7a c\u00e1c v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS, \u0111\u1ed3ng th\u1eddi gi\u1ea3i th\u00edch c\u00e1ch Spherefix t\u1ed1i \u01b0u h\u00f3a s\u1ef1 ph\u1ed1i h\u1ee3p quan tr\u1ecdng n\u00e0y.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 GNSS: Vai tr\u00f2 c\u1ee7a v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Tr\u01b0\u1edbc ti\u00ean, h\u00e3y l\u00e0m r\u00f5 c\u00e1c thu\u1eadt ng\u1eef ch\u00ednh: GNSS l\u00e0 m\u1ea1ng l\u01b0\u1edbi c\u00e1c v\u1ec7 tinh quay quanh qu\u1ef9 \u0111\u1ea1o cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 \u0111\u1ecbnh v\u1ecb, d\u1eabn \u0111\u01b0\u1eddng v\u00e0 \u0111\u1ed3ng b\u1ed9 th\u1eddi gian (PNT) tr\u00ean to\u00e0n c\u1ea7u.
C\u00e1c h\u1ec7 th\u1ed1ng to\u00e0n c\u1ea7u ch\u00ednh bao g\u1ed3m BeiDou c\u1ee7a Trung Qu\u1ed1c, GPS c\u1ee7a M\u1ef9, GLONASS c\u1ee7a Nga v\u00e0 Galileo c\u1ee7a ch\u00e2u \u00c2u \u2014 t\u1ea5t c\u1ea3 \u0111\u1ec1u d\u1ef1a v\u00e0o v\u1ec7 tinh v\u00e0 thi\u1ebft b\u1ecb thu GNSS \u0111\u1ec3 mang l\u1ea1i gi\u00e1 tr\u1ecb.
M\u00e1y thu GNSS l\u00e0 thi\u1ebft b\u1ecb \u0111\u1eb7t tr\u00ean m\u1eb7t \u0111\u1ea5t c\u00f3 ch\u1ee9c n\u0103ng thu nh\u1eadn t\u00edn hi\u1ec7u v\u1ec7 tinh v\u00e0 chuy\u1ec3n \u0111\u1ed5i ch\u00fang th\u00e0nh d\u1eef li\u1ec7u v\u1ecb tr\u00ed c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c \u2014 t\u1eeb \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 \u0111\u1ed3ng h\u1ed3 th\u00f4ng minh cho \u0111\u1ebfn h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb tr\u00ean xe v\u00e0 thi\u1ebft b\u1ecb \u0111o \u0111\u1ea1c c\u00f4ng nghi\u1ec7p.
\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng chuy\u00ean nghi\u1ec7p, c\u00e1c b\u1ed9 thu GNSS Spherefix d\u1eabn \u0111\u1ea7u th\u1ecb tr\u01b0\u1eddng nh\u1edd kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 \u0111\u1ea7y \u0111\u1ee7 nhi\u1ec1u h\u1ec7 th\u1ed1ng v\u1ec7 tinh v\u00e0 kh\u1ea3 n\u0103ng x\u1eed l\u00fd \u0111a k\u00eanh, gi\u00fap gi\u1ea3i m\u00e3 t\u00edn hi\u1ec7u v\u1ec7 tinh v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c v\u01b0\u1ee3t tr\u1ed9i.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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V\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Vai tr\u00f2 ri\u00eang bi\u1ec7t v\u00e0 b\u1ed5 sung cho nhau c\u1ee7a h\u1ecd r\u1ea5t \u0111\u01a1n gi\u1ea3n:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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T\u00ednh n\u0103ng n\u1ed5i b\u1eadt: Ngo\u00e0i c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\u2022 V\u1ec7 tinh:<\/strong> C\u00e1c \u201c\u0111\u00e8n hi\u1ec7u\u201d quay quanh qu\u1ef9 \u0111\u1ea1o li\u00ean t\u1ee5c ph\u00e1t \u0111i c\u00e1c t\u00edn hi\u1ec7u v\u00f4 tuy\u1ebfn mang theo d\u1eef li\u1ec7u qu\u1ef9 \u0111\u1ea1o, d\u1ea5u th\u1eddi gian v\u00e0 m\u00e3 \u0111\u1ecbnh v\u1ecb v\u1ec1 Tr\u00e1i \u0110\u1ea5t v\u1edbi t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng \u2014 \u0111i\u1ec1u n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u1ec3 c\u00e1c v\u1ec7 tinh v\u00e0 thi\u1ebft b\u1ecb thu GNSS c\u00f3 th\u1ec3 ph\u1ed1i h\u1ee3p ho\u1ea1t \u0111\u1ed9ng.
\u2022 Thi\u1ebft b\u1ecb thu GNSS:<\/strong> C\u00e1c \u201cb\u1ed9 gi\u1ea3i m\u00e3 t\u00edn hi\u1ec7u\u201d \u0111\u1eb7t tr\u00ean m\u1eb7t \u0111\u1ea5t thu nh\u1eadn t\u00edn hi\u1ec7u v\u1ec7 tinh qua \u0103ng-ten t\u00edch h\u1ee3p, x\u1eed l\u00fd d\u1eef li\u1ec7u v\u00e0 t\u00ednh to\u00e1n v\u1ecb tr\u00ed 3D, v\u1eadn t\u1ed1c v\u00e0 th\u1eddi gian. C\u00e1c b\u1ed9 thu Spherefix n\u00e2ng t\u1ea7m kh\u1ea3 n\u0103ng n\u00e0y l\u00ean m\u1ed9t b\u01b0\u1edbc m\u1edbi nh\u1edd h\u1ed7 tr\u1ee3 to\u00e0n d\u1ea3i t\u1ea7n v\u00e0 \u0111a h\u1ec7 th\u1ed1ng v\u1ec7 tinh, c\u00f9ng 1.408 k\u00eanh t\u1ed1c \u0111\u1ed9 cao \u0111\u1ec3 thu nh\u1eadn t\u00edn hi\u1ec7u nhanh h\u01a1n v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u ch\u00ednh x\u00e1c h\u01a1n, t\u1eeb \u0111\u00f3 c\u1ee7ng c\u1ed1 k\u1ebft n\u1ed1i gi\u1eefa v\u1ec7 tinh v\u00e0 c\u00e1c b\u1ed9 thu GNSS.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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S\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa c\u00e1c v\u1ec7 tinh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb thu GNSS tu\u00e2n theo m\u1ed9t quy tr\u00ecnh c\u00f3 c\u1ea5u tr\u00fac g\u1ed3m b\u1ed1n b\u01b0\u1edbc \u2014 t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng h\u1ecfi \u0111\u00e1p.
C\u00e1c v\u1ec7 tinh truy\u1ec1n d\u1eef li\u1ec7u, c\u00f2n c\u00e1c b\u1ed9 thu GNSS t\u00ednh to\u00e1n v\u1ecb tr\u00ed. C\u00e1c b\u1ed9 thu Spherefix t\u1ed1i \u01b0u h\u00f3a t\u1eebng b\u01b0\u1edbc \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ecbnh v\u1ecb \u1ed5n \u0111\u1ecbnh v\u00e0 c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao ngay c\u1ea3 trong nh\u1eefng m\u00f4i tr\u01b0\u1eddng kh\u00f3 kh\u0103n, t\u1eeb \u0111\u00f3 t\u0103ng c\u01b0\u1eddng s\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa c\u00e1c v\u1ec7 tinh v\u00e0 c\u00e1c b\u1ed9 thu GNSS.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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B\u01b0\u1edbc 1: C\u00e1c v\u1ec7 tinh ph\u00e1t t\u00edn hi\u1ec7u \u0111\u1ecbnh v\u1ecb li\u00ean t\u1ee5c<\/h5>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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M\u1ed7i v\u1ec7 tinh GNSS truy\u1ec1n \u0111i m\u1ed9t m\u00e3 nh\u1eadn d\u1ea1ng duy nh\u1ea5t c\u00f9ng v\u1edbi c\u00e1c th\u00f4ng \u0111i\u1ec7p \u0111\u1ecbnh v\u1ecb ch\u1ee9a d\u1eef li\u1ec7u qu\u1ef9 \u0111\u1ea1o ch\u00ednh x\u00e1c, \u0111\u1ed9 l\u1ec7ch \u0111\u1ed3ng h\u1ed3 v\u00e0 t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng \u2014 nh\u1eefng d\u1eef li\u1ec7u quan tr\u1ecdng \u0111\u1ec3 c\u00e1c b\u1ed9 thu GNSS c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng.
C\u00e1c t\u00edn hi\u1ec7u n\u00e0y r\u1ea5t y\u1ebfu (y\u1ebfu h\u01a1n c\u1ea3 nhi\u1ec5u nhi\u1ec7t n\u1ec1n) nh\u01b0ng l\u1ea1i c\u00f3 \u00fd ngh\u0129a quan tr\u1ecdng; ch\u00fang truy\u1ec1n \u0111\u1ebfn Tr\u00e1i \u0110\u1ea5t v\u00e0 c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 thu GNSS c\u00f3 \u0111\u1ed9 nh\u1ea1y cao \u0111\u1ec3 thu nh\u1eadn.
C\u00e1c b\u1ed9 thu GNSS Spherefix \u0111\u01b0\u1ee3c trang b\u1ecb \u0103ng-ten si\u00eau nh\u1ea1y \u0111\u1ec3 nhanh ch\u00f3ng b\u1eaft \u0111\u01b0\u1ee3c c\u00e1c t\u00edn hi\u1ec7u y\u1ebfu n\u00e0y, ngay c\u1ea3 \u1edf nh\u1eefng khu v\u1ef1c c\u00f3 t\u00edn hi\u1ec7u y\u1ebfu, \u0111\u1ea3m b\u1ea3o k\u1ebft n\u1ed1i li\u00ean t\u1ee5c v\u1edbi c\u00e1c v\u1ec7 tinh.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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B\u01b0\u1edbc 2: C\u00e1c b\u1ed9 thu GNSS thu nh\u1eadn v\u00e0 x\u1eed l\u00fd t\u00edn hi\u1ec7u<\/h6>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Nhi\u1ec7m v\u1ee5 ch\u00ednh c\u1ee7a m\u1ed9t b\u1ed9 thu GNSS l\u00e0 t\u00e1ch bi\u1ec7t t\u00edn hi\u1ec7u v\u1ec7 tinh kh\u1ecfi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb xung quanh, khu\u1ebfch \u0111\u1ea1i c\u00e1c t\u00edn hi\u1ec7u y\u1ebfu v\u00e0 chuy\u1ec3n \u0111\u1ed5i ch\u00fang th\u00e0nh d\u1eef li\u1ec7u s\u1ed1 c\u00f3 th\u1ec3 x\u1eed l\u00fd \u2014 \u0111\u00e2y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t trong s\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS.
\u0110\u01b0\u1ee3c trang b\u1ecb 1.408 k\u00eanh t\u1ed1c \u0111\u1ed9 cao, c\u00e1c b\u1ed9 thu GNSS Spherefix c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n bi\u1ec7t c\u00e1c t\u00edn hi\u1ec7u t\u1eeb nhi\u1ec1u v\u1ec7 tinh, lo\u1ea1i b\u1ecf nhi\u1ec5u v\u00e0 duy tr\u00ec vi\u1ec7c thu nh\u1eadn t\u00edn hi\u1ec7u \u1ed5n \u0111\u1ecbnh.
\u0110\u1ed9 tin c\u1eady n\u00e0y v\u1eabn \u0111\u01b0\u1ee3c duy tr\u00ec ngay c\u1ea3 trong c\u00e1c khu v\u1ef1c \u0111\u00f4 th\u1ecb ch\u1eadt h\u1eb9p, khu r\u1eebng ho\u1eb7c c\u00e1c m\u00f4i tr\u01b0\u1eddng b\u1ecb che khu\u1ea5t kh\u00e1c, gi\u00fap duy tr\u00ec k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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B\u01b0\u1edbc 3: T\u00ednh to\u00e1n kho\u1ea3ng c\u00e1ch v\u00e0 \u0111o kho\u1ea3ng c\u00e1ch<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Vi\u1ec7c \u0111\u1ecbnh v\u1ecb ch\u00ednh x\u00e1c d\u1ef1a tr\u00ean vi\u1ec7c \u0111o th\u1eddi gian truy\u1ec1n t\u00edn hi\u1ec7u t\u1eeb v\u1ec7 tinh \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb thu GNSS, \u0111\u1ed3ng th\u1eddi t\u00ednh to\u00e1n kho\u1ea3ng c\u00e1ch theo \u0111\u01b0\u1eddng th\u1eb3ng d\u1ef1a tr\u00ean t\u1ed1c \u0111\u1ed9 \u00e1nh s\u00e1ng.
V\u00ec c\u00e1c v\u1ec7 tinh s\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 nguy\u00ean t\u1eed c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao, c\u00e1c b\u1ed9 thu GNSS c\u1ea7n \u00edt nh\u1ea5t b\u1ed1n t\u00edn hi\u1ec7u v\u1ec7 tinh: ba t\u00edn hi\u1ec7u \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh kinh \u0111\u1ed9, v\u0129 \u0111\u1ed9 v\u00e0 \u0111\u1ed9 cao, v\u00e0 t\u00edn hi\u1ec7u th\u1ee9 t\u01b0 \u0111\u1ec3 hi\u1ec7u ch\u1ec9nh sai s\u1ed1 \u0111\u1ed3ng h\u1ed3.
C\u00e1c b\u1ed9 thu GNSS Spherefix h\u1ed7 tr\u1ee3 t\u1ea5t c\u1ea3 c\u00e1c h\u1ec7 th\u1ed1ng GNSS ch\u00ednh, cho ph\u00e9p k\u1ebft n\u1ed1i v\u1edbi nhi\u1ec1u v\u1ec7 tinh c\u00f9ng l\u00fac \u0111\u1ec3 n\u00e2ng cao \u0111\u1ed9 ch\u00ednh x\u00e1c trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh kho\u1ea3ng c\u00e1ch v\u00e0 gi\u1ea3m thi\u1ec3u sai s\u1ed1, t\u1eeb \u0111\u00f3 t\u1ed1i \u01b0u h\u00f3a k\u1ebft n\u1ed1i gi\u1eefa v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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B\u01b0\u1edbc 4: T\u00ednh to\u00e1n v\u1ecb tr\u00ed v\u00e0 hi\u1ec3n th\u1ecb k\u1ebft qu\u1ea3<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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S\u1eed d\u1ee5ng c\u00e1c thu\u1eadt to\u00e1n ti\u00ean ti\u1ebfn (ph\u01b0\u01a1ng ph\u00e1p b\u00ecnh ph\u01b0\u01a1ng t\u1ed1i thi\u1ec3u, l\u1ecdc Kalman), b\u1ed9 thu GNSS hi\u1ec7u ch\u1ec9nh c\u00e1c \u0111\u1ed9 tr\u1ec5 do kh\u00ed quy\u1ec3n, hi\u1ec7u \u1ee9ng \u0111a \u0111\u01b0\u1eddng truy\u1ec1n v\u00e0 c\u00e1c nhi\u1ec5u kh\u00e1c \u0111\u1ec3 t\u00ednh to\u00e1n t\u1ecda \u0111\u1ed9 ch\u00ednh x\u00e1c t\u1eeb t\u00edn hi\u1ec7u v\u1ec7 tinh.
C\u00e1c b\u1ed9 thu GNSS Spherefix \u0111\u01b0\u1ee3c trang b\u1ecb h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb qu\u00e1n t\u00ednh IMU t\u00edch h\u1ee3p, gi\u00fap duy tr\u00ec t\u00ednh li\u00ean t\u1ee5c trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed ngay c\u1ea3 khi t\u00edn hi\u1ec7u v\u1ec7 tinh b\u1ecb gi\u00e1n \u0111o\u1ea1n t\u1ea1m th\u1eddi.
C\u00f4ng ngh\u1ec7 n\u00e0y mang l\u1ea1i \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ecbnh v\u1ecb RTK \u1edf m\u1ee9c centimet cho c\u00e1c \u1ee9ng d\u1ee5ng chuy\u00ean nghi\u1ec7p, th\u1ec3 hi\u1ec7n s\u1ee9c m\u1ea1nh c\u1ee7a s\u1ef1 ph\u1ed1i h\u1ee3p nh\u1ecbp nh\u00e0ng gi\u1eefa c\u00e1c v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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M\u1ed1i quan h\u1ec7 t\u01b0\u01a1ng h\u1ed7: T\u1ea1i sao c\u1ea3 hai \u0111\u1ec1u quan tr\u1ecdng<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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N\u1ebfu kh\u00f4ng c\u00f3 v\u1ec7 tinh, c\u00e1c b\u1ed9 thu GNSS s\u1ebd tr\u1edf n\u00ean v\u00f4 d\u1ee5ng \u2014 ch\u00fang kh\u00f4ng c\u00f3 t\u00edn hi\u1ec7u \u0111\u1ec3 x\u1eed l\u00fd, khi\u1ebfn m\u1ed1i li\u00ean k\u1ebft quan tr\u1ecdng gi\u1eefa v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS b\u1ecb \u0111\u1ee9t \u0111o\u1ea1n.
N\u1ebfu kh\u00f4ng c\u00f3 b\u1ed9 thu GNSS, c\u00e1c t\u00edn hi\u1ec7u v\u1ec7 tinh ch\u1ec9 l\u00e0 nh\u1eefng s\u00f3ng v\u00f4 tuy\u1ebfn v\u00f4 h\u00ecnh v\u00e0 v\u00f4 ngh\u0129a, b\u1edfi v\u00ec b\u1ea3n th\u00e2n c\u00e1c v\u1ec7 tinh kh\u00f4ng th\u1ec3 cung c\u1ea5p d\u1eef li\u1ec7u v\u1ecb tr\u00ed c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c.
\u0110\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ecbnh v\u1ecb c\u0169ng ph\u1ee5 thu\u1ed9c nh\u01b0 nhau v\u00e0o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a v\u1ec7 tinh v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 thu GNSS \u2014 c\u1ea3 hai y\u1ebfu t\u1ed1 n\u00e0y \u0111\u1ec1u kh\u00f4ng th\u1ec3 thi\u1ebfu.
C\u00e1c b\u1ed9 thu GNSS Spherefix l\u1ea5p \u0111\u1ea7y kho\u1ea3ng tr\u1ed1ng n\u00e0y m\u1ed9t c\u00e1ch ho\u00e0n h\u1ea3o, nh\u1edd c\u00f4ng ngh\u1ec7 ch\u1ed1ng nhi\u1ec5u m\u1ea1nh m\u1ebd v\u00e0 c\u00e1c thu\u1eadt to\u00e1n ch\u00ednh x\u00e1c gi\u00fap chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u v\u1ec7 tinh th\u00f4 th\u00e0nh d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady v\u00e0 c\u00f3 th\u1ec3 \u1ee9ng d\u1ee5ng \u0111\u01b0\u1ee3c.
Ch\u00fang th\u1ec3 hi\u1ec7n hi\u1ec7u qu\u1ea3 v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p, n\u00f4ng nghi\u1ec7p v\u00e0 tr\u1eafc \u0111\u1ecba, t\u1eadn d\u1ee5ng t\u1ed1i \u0111a s\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa v\u1ec7 tinh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb thu GNSS.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\u1ee8ng d\u1ee5ng trong th\u1ef1c t\u1ebf: Spherefix \u0111\u00e1p \u1ee9ng m\u1ecdi t\u00ecnh hu\u1ed1ng<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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S\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS kh\u00f4ng ch\u1ec9 d\u1eebng l\u1ea1i \u1edf vi\u1ec7c \u0111\u1ecbnh v\u1ecb h\u00e0ng ng\u00e0y, m\u00e0 c\u00f2n h\u1ed7 tr\u1ee3 c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p quan tr\u1ecdng tr\u00ean to\u00e0n th\u1ebf gi\u1edbi \u2014 t\u1ea5t c\u1ea3 \u0111\u1ec1u d\u1ef1a tr\u00ean s\u1ef1 k\u1ebft h\u1ee3p h\u00e0i h\u00f2a gi\u1eefa v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS.
C\u00e1c b\u1ed9 thu GNSS Spherefix \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 trong m\u1ecdi m\u00f4i tr\u01b0\u1eddng, v\u1edbi c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u00ednh bao g\u1ed3m:
\u2022 S\u1eed d\u1ee5ng d\u00e2n s\u1ef1:<\/strong> \u0110\u1ecbnh v\u1ecb \u1ed5n \u0111\u1ecbnh v\u00e0 ch\u00ednh x\u00e1c cho vi\u1ec7c \u0111\u1ecbnh h\u01b0\u1edbng h\u00e0ng ng\u00e0y, ngay c\u1ea3 trong c\u00e1c khu v\u1ef1c \u0111\u00f4 th\u1ecb \u0111\u00f4ng \u0111\u00fac, nh\u1edd s\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa c\u00e1c v\u1ec7 tinh v\u00e0 thi\u1ebft b\u1ecb thu GNSS.
\u2022 N\u00f4ng nghi\u1ec7p ch\u00ednh x\u00e1c:<\/strong> \u0110\u1ecbnh v\u1ecb ch\u00ednh x\u00e1c \u0111\u1ebfn t\u1eebng centimet trong c\u00e1c c\u00f4ng \u0111o\u1ea1n gieo tr\u1ed3ng, b\u00f3n ph\u00e2n v\u00e0 thu ho\u1ea1ch, gi\u00fap t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t n\u00f4ng nghi\u1ec7p nh\u1edd s\u1ef1 ph\u1ed1i h\u1ee3p nh\u1ecbp nh\u00e0ng gi\u1eefa v\u1ec7 tinh v\u00e0 thi\u1ebft b\u1ecb thu GNSS.
\u2022 K\u1ef9 thu\u1eadt & Tr\u1eafc \u0111\u1ecba:<\/strong> D\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady v\u00e0 c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao ph\u1ee5c v\u1ee5 cho vi\u1ec7c \u0111\u1ecbnh v\u1ecb c\u00f4ng tr\u00ecnh, gi\u00e1m s\u00e1t k\u1ebft c\u1ea5u v\u00e0 kh\u1ea3o s\u00e1t \u0111\u1ecba ch\u1ea5t, \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi v\u1ec7 tinh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb thu GNSS.
\u2022 H\u00e0ng h\u1ea3i & H\u00e0ng kh\u00f4ng<\/strong> \u0110i\u1ec1u h\u01b0\u1edbng:<\/strong> Kh\u1ea3 n\u0103ng thu t\u00edn hi\u1ec7u \u1ed5n \u0111\u1ecbnh v\u00e0 b\u1ec1n b\u1ec9 trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n ngo\u00e0i tr\u1eddi kh\u1eafc nghi\u1ec7t v\u00e0 m\u00f4i tr\u01b0\u1eddng h\u1ebbo l\u00e1nh, \u0111\u1ea3m b\u1ea3o c\u00e1c v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed3ng b\u1ed9 m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a b\u1ed9 thu GNSS Spherefix<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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K\u1ebft lu\u1eadn<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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C\u00e1c v\u1ec7 tinh v\u00e0 thi\u1ebft b\u1ecb thu GNSS l\u00e0 nh\u1eefng \u0111\u1ed1i t\u00e1c kh\u00f4ng th\u1ec3 t\u00e1ch r\u1eddi trong l\u0129nh v\u1ef1c \u0111\u1ecbnh v\u1ecb hi\u1ec7n \u0111\u1ea1i: c\u00e1c v\u1ec7 tinh cung c\u1ea5p d\u1eef li\u1ec7u th\u00f4, c\u00f2n thi\u1ebft b\u1ecb thu GNSS chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u \u0111\u00f3 th\u00e0nh th\u00f4ng tin v\u1ecb tr\u00ed h\u1eefu \u00edch.
C\u00e1c b\u1ed9 thu GNSS Spherefix c\u1ee7ng c\u1ed1 m\u1ed1i quan h\u1ec7 h\u1ee3p t\u00e1c n\u00e0y nh\u1edd kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch t\u00edn hi\u1ec7u, s\u1ee9c m\u1ea1nh x\u1eed l\u00fd v\u00e0 kh\u1ea3 n\u0103ng th\u00edch \u1ee9ng v\u1edbi m\u00f4i tr\u01b0\u1eddng h\u00e0ng \u0111\u1ea7u trong ng\u00e0nh, t\u1eeb \u0111\u00f3 n\u00e2ng cao s\u1ef1 ph\u1ed1i h\u1ee3p gi\u1eefa c\u00e1c v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS.
\u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u d\u00e0nh cho nh\u1eefng ng\u01b0\u1eddi d\u00f9ng y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 \u1ed5n \u0111\u1ecbnh trong vi\u1ec7c \u0111\u1ecbnh v\u1ecb \u2014 t\u1ea5t c\u1ea3 l\u00e0 nh\u1edd kh\u1ea3 n\u0103ng t\u1ed1i \u01b0u h\u00f3a k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c v\u1ec7 tinh v\u00e0 b\u1ed9 thu GNSS.
C\u00f9ng v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 GNSS, Spherefix s\u1ebd ti\u1ebfp t\u1ee5c ho\u00e0n thi\u1ec7n c\u00e1c thi\u1ebft b\u1ecb thu t\u00edn hi\u1ec7u c\u1ee7a m\u00ecnh nh\u1eb1m khai th\u00e1c t\u1ed1i \u0111a ti\u1ec1m n\u0103ng c\u1ee7a s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa v\u1ec7 tinh v\u00e0 thi\u1ebft b\u1ecb thu GNSS cho m\u1ecdi ng\u00e0nh c\u00f4ng nghi\u1ec7p.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t<\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\tTrang cu\u1ed1i c\u00f9ng<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t<\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\tTrang ti\u1ebfp theo<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

C\u00e1ch Spherefix c\u00e1ch m\u1ea1ng h\u00f3a s\u1ef1 ph\u1ed1i h\u1ee3p \u0111\u1ecbnh 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