Can someone please answer the following multiple choice questions. Thanks 10. A
ID: 1765237 • Letter: C
Question
Can someone please answer the following multiple choice questions. Thanks
10. A geodet c distance is relative to whch computational surtace? The gecid b. The ellipscid t. The Earth s surface d. None of the above NAVD 88 b. NAD 83 . NGVO 29 B. When pertarming GP5, what best describes peor PDOF? An insuficdient number f satelltes h. A reflected signal c. Bad satellite geometry 9. Which coordnate system best describes the mast fundamental ane used by GPST a Geodetc titude, onptude, ellpsoid height) h. State plane Incething, easting, elevaticn) . Earth-centered Cartesianxya d. None of the sbove 10. When perferming GPS, which type of situation is east ikey to cause mult poth? b. When observirg next to chain-Ink ferce . When abserving ahave a snow coered field d. When absersing in the middle of an asphalt street 11. Which surface best descrikes mean sa-leve The ellipseid b. The telluroid . The gecid d. Nane af the abave CF220 AYN SPR NG 1, Cal Paly Pomana - Civil Fngneering, Pag3 12. A staticn has been occupied using GPS. You have determined the following values Elipscid height 102.90m Geaid separation -32.62m What is the camputed crthametrc height foer this statian? a. 9.28m h.134.52m . 134.52m d. None of the above 13. When perferming GPS, what best descrites mutipath? Poor signal recepton b. obstructions blocking the line of sight to the satelites e. A relected saelite signa d. None of the above 14. When re dual-frequency GPS cboervaticns the mest advantapeous? A When abservig in high maltipath sitaatians b. When obserirg baselines onger than 2skm e. When making ?1servationsdurin&Perodsaf; high PDOP d. When as duinga starm 15. WhHT does PO sand fo Prohshle Dilut o f Precisian h. Predcted ilutonf Precisian . Potential pilution of Frecisicn d. Pasitioal DilutinoPecisionExplanation / Answer
#as numbering in question are not proper, I use my own numbering system. 1 for the first than in incremental order.
Answer 1:
Geodetic distance is the length of shortest curve between the two points along the earth's surface. Hence answer should be C i.e, The earth's surface
Answer 2:
National Geodetic vertical datum of 1929(NGVD 29) represent mean sea level i.e, option c is correct.
Answer 3:
In a GPS Poor position dilution of precision(PDOP) describes error due to bad satellite geometry i.e, option c is correct.
Answer 4:
Geodetic system best describe the coordinate system in GPS i.e, option a is correct.
Answer 5:
The least possible cause of multipath is when observing next to a chain link fence i.e option b
Answer 6:
Geoid best decribe the mean sea level i.e, option c is correct.
Answer 7:
ellipsoid height,h=101.9m
Geoid height,N= -32.62m
Orthometric height,H=h-N=134.52m
option c is correct.
Answer 8:
option c i.e reflected satellite segnal best describe multipath