The Impact of Different Mapping Function Models and Meteorological Parameter Calculation Methods on the Calculation Results of Single-Frequency Precise Point Positioning with Increased Tropospheric Gradient

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Abbreviation</td><td class="align_center">Item</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">MFM1</td><td class="align_center">B&amp;E</td></tr><tr><td class="align_left">MFM3</td><td class="align_center">Hopfield</td></tr><tr><td class="align_left">MFM5</td><td class="align_center">VMF1_site</td></tr><tr><td class="align_left">MFM7</td><td class="align_center">VMF3_site</td></tr><tr><td class="align_left">MFM9</td><td class="align_center">VMF3_grid <svg height="11.1467pt" id="M123" style="vertical-align:-0.3500004pt" version="1.1" viewbox="-0.0498162 -10.7967 34.1265 11.1467" width="34.1265pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M153 550H386L412 615L406 623H120L82 318C104 327 142 338 184 338C294 338 347 275 347 187C347 112 305 39 221 39C160 39 119 71 97 89C88 97 80 96 71 90C59 80 50 67 49 57C48 45 52 36 66 23C80 9 123 -12 169 -12C221 -11 288 15 342 59C403 109 431 165 431 225C431 308 366 395 238 395C212 395 165 379 127 364L153 550Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,6.24,-5.741)"><path d="M339 262C339 340 273 403 193 403S48 340 48 262S113 121 193 121S339 184 339 262ZM283 262C283 210 242 168 193 168S104 210 104 262S144 356 193 356S283 314 283 262Z"></path></g><g transform="matrix(.013,0,0,-0.013,13.16,0)"><path d="M528 54L331 254L528 455L492 493L294 291L96 493L60 455L257 254L60 54L96 16L294 217L492 16L528 54Z"></path></g><g transform="matrix(.013,0,0,-0.013,23.697,0)"><path d="M153 550H386L412 615L406 623H120L82 318C104 327 142 338 184 338C294 338 347 275 347 187C347 112 305 39 221 39C160 39 119 71 97 89C88 97 80 96 71 90C59 80 50 67 49 57C48 45 52 36 66 23C80 9 123 -12 169 -12C221 -11 288 15 342 59C403 109 431 165 431 225C431 308 366 395 238 395C212 395 165 379 127 364L153 550Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,29.937,-5.741)"><path d="M339 262C339 340 273 403 193 403S48 340 48 262S113 121 193 121S339 184 339 262ZM283 262C283 210 242 168 193 168S104 210 104 262S144 356 193 356S283 314 283 262Z"></path></g></svg></td></tr><tr><td class="align_left">MP2</td><td class="align_center">GPT</td></tr><tr><td class="align_left">MP4</td><td class="align_center">GPT2_1w</td></tr><tr><td class="align_left">MP6</td><td class="align_center">GPT3_1</td></tr><tr><td class="align_left">MFM2</td><td class="align_center">GMF</td></tr><tr><td class="align_left">MFM4</td><td class="align_center">NMF</td></tr><tr><td class="align_left">MFM6</td><td class="align_center">VMF1_grid</td></tr><tr><td class="align_left">MFM8</td><td class="align_center">VMF3_grid <svg height="11.1467pt" id="M124" style="vertical-align:-0.3500004pt" version="1.1" viewbox="-0.0498162 -10.7967 34.1265 11.1467" width="34.1265pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M384 0V27C293 34 287 42 287 114V635C232 613 172 594 109 583V559L157 557C201 555 205 550 205 499V114C205 42 199 34 109 27V0H384Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,6.24,-5.741)"><path d="M339 262C339 340 273 403 193 403S48 340 48 262S113 121 193 121S339 184 339 262ZM283 262C283 210 242 168 193 168S104 210 104 262S144 356 193 356S283 314 283 262Z"></path></g><g transform="matrix(.013,0,0,-0.013,13.16,0)"><path d="M528 54L331 254L528 455L492 493L294 291L96 493L60 455L257 254L60 54L96 16L294 217L492 16L528 54Z"></path></g><g transform="matrix(.013,0,0,-0.013,23.697,0)"><path d="M384 0V27C293 34 287 42 287 114V635C232 613 172 594 109 583V559L157 557C201 555 205 550 205 499V114C205 42 199 34 109 27V0H384Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,29.937,-5.741)"><path d="M339 262C339 340 273 403 193 403S48 340 48 262S113 121 193 121S339 184 339 262ZM283 262C283 210 242 168 193 168S104 210 104 262S144 356 193 356S283 314 283 262Z"></path></g></svg></td></tr><tr><td class="align_left">MP1</td><td class="align_center">Standard atmosphere</td></tr><tr><td class="align_left">MP3</td><td class="align_center">GPT2</td></tr><tr><td class="align_left">MP5</td><td class="align_center">GPT2_5w</td></tr><tr><td class="align_left">MP7</td><td class="align_center">GPT3_5</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The abbreviation of mapping function models and meteorological parameter calculation methods.</div>

Mathematical Problems in Engineering

tab3

Table 3

Table 3: The Impact of Different Mapping Function Models and Meteorological Parameter Calculation Methods on the Calculation Results of Single-Frequency Precise Point Positioning with Increased Tropospheric Gradient 

Table 3 | The Impact of Different Mapping Function Models and Meteorological Parameter Calculation Methods on the Calculation Results of Single-Frequency Precise Point Positioning with Increased Tropospheric Gradient 