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    GNSSCGCS2000ݴ

    2019-01-19 15:37:11Դ: 人ѧѧϢѧ桷ߣ

    Դ人ѧѧ·Ϣѧ桷201812

    ߣ, Ӣ

    һߣ, ʿ, оԱ, ҪǴزʹϵо

    ʾƽ̨תעԭʼ

    ժ Ҫ2000Ҵϵ(CGCS2000)ƹʹò漰ϵµijɹתͬʱҲ漰ȫ򵼺ϵͳ(Global Navigation Satellite SystemGNSS)ֶλõĵλĹ㡣ȡGNSS۲ݺͽ㵽CGCS2000õIJԷͬοվѡԭͬƽǰķͬԼòͬķλôӵǰԪCGCS2000ȣʹյCGCS2000ϵµϴɴﵽ׼ֽԭGNSSݴĶݴߵ⣬Ϊѡ񣬻֮GNSSݴȱѧĹΪݡڴˣһͳƷලΪοվѡ;ü򻮷;ð˶㷽ǰԪλøCGCS2000лڼվ㾫򻮷ַά꾫2 mmͨϷƣXYZϵٶȴ0.920.720.97 mm/aֱ0.190.450.32 mm/aŻ͸ĽCGCS2000ά־ȡ

    ؼʣCGCS2000 ල

    ӻȡȫ򵼺ϵͳ(Global Navigation Satellite System, GNSS)վ۲ݣվCGCS2000Ҫ׼վѡȡݴվȹ̡ȣ֪ѡȡIJͬվڵĻ׼ͬ;Σݴʱùʸ߾ݴ(GAMITBERNESE)վ϶࣬ķΧҪзͬķҲݴӰ;ڻƽվҪ㵽CGCS2000㷽IJͬԽܴӰ졣ԭ򣬱ҪܻGNSS۲ݵCGCS2000еŻԣͳ淽бȽϣͬʱϼڵIJͬԺͷжԺͶʵؽۣӦý

    1 ׼վѡȡ

    ϵľʵ֡׼վڿάʵǼãȷ۶ϵλùϵ;׼վѡȡԽѧϵʵԽ׼ʵ漰׼վ׼վ׼վֲݡ

    1.1 ׼վѡȡԭ

    Ҫڹһ׼ݴ̾˵ѡȡ׼ȫվʱϣչͨñ׼ԭԸվзԭ򣬲վڽ3 a()۲⣬޳۲Լв͹۲ϲվ㡣ȶԭվʱȶԺãȶ“֪”ĵλ仯ٶȡ۸߾ԭٶȳ3 mm/aֽܶԭ3ͬĵٶȳв3 mm/aƽԭվ㾡ȫֲ޾һԭվλúٶȵľӦһ¡

    ڴ˻ϣල߲Բվоѡ[1-4]һ()ϣվٶȴСͷӦһ£ڿռϵı仯Ӧ𽥵ġIJõҪ԰˶ģͻֵİ߽ΪѧϡڴѡȡĿܵ㣬Ƚʵ(X, Y, Z)ٶ(VX , VY , VZ )ʽ(1)תΪƽٶ(Ve , Vn )ٸʽ(2)ϰģŷʸ(ω'x , ω'y , ω'z )

    GNSSCGCS2000ݴ__

    ʽУr Ϊ뾶;( φ, λ )Ϊվγȡȡ

    ģͲ(ω'x , ω'y , ω'z )ÿվٶȣΪģٶȡͬʱٶʸķλǣվģٶȺͷλʵٶȺͷλȽϣ޳вֱֵ2σ1 2σ2 IJվ

    GNSSCGCS2000ݴ__

    ʽУσ1 ΪڲվģٶȲв;σ2 ΪλDzв;ΛΪٶȵķλǡ

    ԭڹʵο(international terrestrial reference frameITRF)վѡȡ92վΪվЩվΪҹ׼ݴĻ׼վֲͼ 1ͼ 1кɫDzüල෨ѡȡ92GNSS(international GNSS service, IGS)վ

    GNSSCGCS2000ݴ__

    ͼ 1 ȫվֲ

    1.2 վֲ۷

    оվķֲԼһӰ죬׼վֲȣʹƸȷɿСƽһҪ۲ֵҪҾҪߣһҪվܾȵطֲȶʹϵнǿĽṹһϣվķֲһDzȵģӦվ㸲󡢷ֲȵԭվǶ죬Ҳʹ׼ܸϿǣվķֲȻ׼

    ϽѡվȷֲڵϣȡӦýӽԭ()Ϊվֲָ꣬ʽΪ

    GNSSCGCS2000ݴ__

    ʽУ(X0, Y0, Z0 )Ϊ; NΪվ

    ǵվֲڵϣȫ棬ܵߵӰ죬XYZ Ƚѣ˽תɴꡣ۱׼Ϊ꾭Ӧӽʼ棬ӳվֲԳ;γȽӽӳվֲϱԳ; ظ߽ӽġ

    2 ݴ

    2.1

    1)

    ׼վ۲⹲ǣ۲վйأվԽԽԶ׼վܼͷֲвοվ(continuously operating reference stationsCORS)վл߽ʱҪվ߳Ȳϴʱ˼[5-7]߽㾫ȡνǸݸվ֮ľ룬ֲܼIJվϡʹϽIJվȵطֲڲͬķ̻ߣʹ߳ȱȽϾȣԴGAMITԸվ߽ľȡüл߽㣬ȿ˲վ⣬֤վ߳Ƚϳּ˲վֲ״ʹòվֲΪȡͼ 2ͼ 3ijʡCORSվΪ˵

    GNSSCGCS2000ݴ__

    ͼ 2 ijʡCORSվֲͼ

    GNSSCGCS2000ݴ__

    ͼ 3 ֵ3

    2) ַ

    ַҹֲϸվֲлֵġҲаγȽ[8]

    2.2 һԷ

    ½̬(crustal movement observation network of China, CMONOC)׼վΪ[6], ȽϷַIJ졣Ϊ֤ܽ㣬ѡȡȫ55½̬л׼վ20133 dĹ۲, վ7йܱIGSվֱ㷽Լַн㣬վֲͼ 4ʾͼ 4кɫDZʾIGSվɫʾ½̬л׼վ

    GNSSCGCS2000ݴ__

    ͼ 4 55½̬CORSվֲͼվֲʾͼ

    ͼ 4üվΪͼ 5Ϊַй黮ּվֲ֤ÿ㹻վ㡣ɺгϲΪƽԭͶ˹ϲΪ³-ƺϼϺ黮Ϊɽľ黮Ϊ²СϲΪ55վΪ5

    GNSSCGCS2000ݴ__

    ͼ 5 ַվֲͼ

    GAMIT/GLOBKн㣬ͳ3ֽ㷽õĻ߳Լվַ꣬㷽Ļ߳ȲάߵԾȡͼ 6Ϊַ㷽õĻԾ;ͼ 7Ϊַ㷽BLH 

    GNSSCGCS2000ݴ__

    ͼ 6 ַԾ

    GNSSCGCS2000ݴ__

    ͼ 7 ַϵ

    ͼ 6ԿڻԾԸַ㾫ȸȶͼ 7ԿIJվַӽӽ㷽ҾȾȡȶά꾫Ⱦ2 mm;ڴϵ£ˮƽҲ1 mmڣ̷߳2 mmڡ

    2.3 ½̬ݴ

    ѡȡȫ240½̬л׼վ20131¹30 dݣַͬ죺ټѲվȷֲ6;ڻڰ鰴5ݴʱҹܱ15IGSվ, GAMIT/GLOBKн㼰ƽõȫGNSSл׼վITRF2008ܡ2013.04Ԫµꡣ

    ϱƽֵΪ±0.8 mm, ƽֵΪ±1.0 mm, ֱƽֵΪ±2.6 mmϱƽֵΪ±0.5 mm, ƽֵΪ±0.5 mm, ֱƽֵΪ±1.9 mmͼ 8Ϊ240½̬л׼վüõNEU꾫ȡ

    GNSSCGCS2000ݴ__

    ͼ 8 240½̬л׼վNEU꾫

    ͼ 8Կ½̬л׼վվάϵ꾫Ⱦ3 mm;վϵ£׼վˮƽС1 mm̷߳С3 mm

    3 ˶

    ڻ˸վITRFܡǰԪµҪվ㵽CGCS2000ϵ£õһDzǿԼƽķCGCS2000վΪƽ׼ƽDzٶȳķ[9-11]ַͨʽCGCS2000ЩվCGCS2000µбȽϷΪ˵IJͬĶԭҲϢռ2014ʼȫʡ1 800CORSվ(92IGSվ)1µĹ۲ݴָCGCS200016CGCS2000Ĺһ׼վбȽϣ졣

    3.1 ַһԼ

    ͼ 9DzٶȳķITRF200816һ׼վ2014.664Ԫµ㵽CGCS2000£CGCS2000µĴ׼бȽϣͼ 9[11]ͼ 9вֵλmͼ 10ΪƽķǿƹĽ(NE)

    GNSSCGCS2000ݴ__

    ͼ 9 ٶȳֵ֪

    GNSSCGCS2000ݴ__

    ͼ 10 CGCS2000Ȼ׼ƽCGCS2000ıȽ

    ͼ 9ͼ 10пԿַվΪXNINDLHAKMINHRBNHLAR⼸վжλXNINDLHAλڲľ飬KMINλڴ飬HRBNHLARλɰ顣⼸վ˶λԭվϴ󣬼ͼ 11վķֲԿвվֲñȽܣԼƽѡȡ׼ƽʱûָĻ׼վ飬ݺնĬ߲תвѡȡ˶һµĻ׼վȺΪƽ׼ˣԭ˶һµվƽٶȳΪǺϣλԭƲһµİϵվתϲﵽ

    GNSSCGCS2000ݴ__

    ͼ 11 ȫCORSվֲCGCS2000Լƽֵվֲͼ

    3.2 ȽϷ

    ȫʡ1 700CORSվַõվCGCS2000µվNEIJʾʸͼ 11Ϊվֲͼַʸֲͼ

    ͼ 11ֻCGCS2000ڷ(10 cm)ĸվķֲٶȳͰģͿԿЩͰ˶һ£վֲڶƽ“ع”CGCS2000ͬѡ׼ķֲܶȡ˶йءѡȡĻ׼վ24׼վУжվ10վռ62%ҷֲܶԼУ“”˲ĵ϶Ǻҹвٶȳһµĵ㣬ֲڶͻϴЩҲǰδԼƽδ˼˶ƵIJͬƽĽϲ

    4 ۺϽ

    ȷҹ1025վ(޳ֻһڹ۲ݺվ꾫ȱȽϲվ)ٶȳXYZٶȳȾ(root mean square, RMS)0.920.720.97 mm/aߵ0.190.450.32 mm/aٶϺͽҹ˶ģCPM-CGCS2000[12-13]ϵITRF2005APKIM2005PB2002NUVEL1A[14-18]ģͽбȽϣͬʱҲģ[19-20]бȽϡ

    ͼ 12ΪBJFSURUMSHAOWUHN4վģ͹ھȡγȷCGCS2000IJ졣[20]ٶȳģͳΪCHINA_F[19]ٶȳΪCHINA_Wͼ 12ɼCPM-CGCS2000ˮƽϱITRF2005APKIM2005PB2002NUVEL1AӾȷCHINA_FCHINA_WģȣCPM-CGCS2000Ҳȣܾȷӳվˮƽ˶

    GNSSCGCS2000ݴ__

    ͼ 12 ģֵCGCS2000ֵˮƽϵıȽ

    5

    ȷGNSS۲վCGCS2000µ꣬ͬķսܴӰ[21-22]ͬڳ洦GNSS׼ѡȡ˹˼˶صļල׼վѡȡ;ܼʹ߳˹˼վصļ;ͬʱڽõĵǰԪµվ㵽CGCS2000˻ٶȳվĹ㷽ڴͳķķܹĽ㾫ȣٶȳľҲкܴߣϵİ˶ľҲĿǰھߵġ

    οף

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