GPS Power Point.


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The GPS recipient has a chronological registry of the considerable number of satellites and their orbital data. ... The GPS recipient knows which satellite it has gotten a sign from, and it realizes that ...
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GPS Power Point Author: Charles N. Associated Georgia Ag Ed Curriculum Office Dr. Straightforward B. Flanders Curriculum Coordinator Georgia Agricultural Education 770/542-9043 flanders@uga.edu www.gaaged.org

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MAIN How GPS Works Uses of GPS in Agriculture Locating Your Position utilizing GPS Locating a Given Position utilizing GPS

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How GPS Works The GPS framework is made out of 24 satellites circling the earth at a height of around 13,800 miles. Every satellite transmits a somewhat diverse coded signal. These coded signs are gotten by a GPS recipient on the Earth which can then decide its area with an exactness of not exactly than one foot. We should perceive how this functions, click next MAIN NEXT

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Satellite B Satellite A How it functions.. The GPS recipient has a chronicle of the considerable number of satellites and their orbital data. This chronological registry is downloaded from the satellites every time the GPS unit is turned on and about at regular intervals after that. In this manner, when it gets a sign from a satellite it naturally knows which satellite it is, and its area in circle. NEXT

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TOOTY FRUITY O… . MARY HAD A LITTLE LAMB… . HOME ON THE RANGE… … . The GPS collector knows which satellite it has gotten a sign from, and it realizes that satellite\'s position in circle. It now needs to decide the separation to the satellite with the goal it should triangulate it\'s position on Earth. The satellites contain four nuclear timekeepers each. These nuclear timekeepers can keep up greatly precisely time, down to not exactly a millisecond, for a drawn out stretch of time. The codes are diverse for every satellite except they are precisely the same. Sort of like an alternate tune for every satellite except the tunes are all precisely the same and the GPS beneficiary knows these melodies by heart. NEXT

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The GPS recipient knows the greater part of the codes and when they are transmitted. Since these codes all go at the velocity of light approx 186,000 miles a second, the GPS recipient can decide the separation to the satellite by contrasting when the code was transmitted with when it was gotten. The GPS recipient thinks about this time hole and can decide the separation to the satellite in view of the length of this time hole. Speed X time = separation Time code is transmitted 186,000 X .07 = 13,020miles Time code is gotten Length of Time hole is .07sec NEXT

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Ok, we know the satellite we got the code from, we know where the satellite is on its orbital way over the earth and we know the separation to the satellite. Things being what they are, we should know precisely where we are correct? … WRONG! Really we require increasingly that one satellite to let us know our careful area. This is on account of the Earth is a circle, and there would be more than one position on the earth that had the same separation to the satellite. You could really draw a circle on the Earth, and every one of the focuses along that circle would be the same separation from the satellite, and you would be some place on that circle. NEXT You could be Here

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With two satellites you could contract your area down to two conceivable areas. You Could Be Here? NEXT

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With three satellites you could show signs of improvement evaluation on your area. It would limit it down to one point. YOU ARE HERE NEXT

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It is ideal in the event that you recognize and have separations to no less than four satellites all together for your area to be precisely measured. A few GPS recipients won\'t give you an area by any means, unless you have no less than four satellites. YOUR ARE DEFFINATELY RIGHT HERE NEXT

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By having a separation from a fourth satellite it expands the exactness of your area and can give you a precise elevation too. In view of how the 24 satellites are masterminded in circle there will be somewhere around 5 and 8 satellites above you regardless of where you are on Earth. Most GPS collector can deal with upwards of 12 satellite contacts at once, so you shouldn\'t stress over getting an excessive number of satellite signs at any one time. NEXT

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C F G A to put it plainly, a GPS beneficiary works by getting and distinguishing signals from no less than four satellites. By measuring the time slack in the signs it can decide the separation to every satellite. Once the beneficiary has decided the separation from the four satellites it can then decide its Latitude, Longitude, and elevation above ocean level. NEXT

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Things to Know! Since the satellite is utilizing radio waves there are a few things to remember. Radio waves can\'t go through a few articles. Ex: structures, a few trees, mountains. You won\'t get a sign. Radio waves can ricochet or be reflected off of specific items. Ex: water, vast metal articles, structures. Your sign won\'t be precise. These can bring about a wrong estimations. NEXT Obstructed Reflection

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To get the best estimation: Remain in the open. Stay away from structures and tall trees. Take a few estimations. Hold up, have tolerance. Keep in mind the satellites are circling, and a satellite that was not obvious before may come into perspective of the collector and give you a more exact estimation. NEXT

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Uses For GPS was principally intended to be utilized by the military. Be that as it may, numerous ventures have discovered it to extremely helpful including Agriculture. BACK NEXT

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Farming Farmers can utilize GPS to help them furrow straight lines to empower them utilize their territory all the more proficiently. NEXT

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Agriculture Farmers can utilize GPS to stamp zones for pesticide or compost application. Along these lines lessening waste. NEXT

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Forestry Foresters can utilize GPS to help them journey timber, decide the extent of area tracts, find and check regions of significance. NEXT

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How to Locate Your Position For the following two activities we will be utilizing the Magellan GPS 315. This is a moderately reasonable yet tough hand held GPS unit. Initially press the red PWR catch. At the base of the screen a message will show up "PRESS ENTER TO CONTINUE" If you don\'t press enter the unit will stop. Press ENTER BACK NEXT

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These are the satellites areas How to Locate Your Position cont.. When you have squeezed "ENTER" The status screen will show up. This screen shows the GPS satellite\'s present areas, and which satellites are as of now noticeable to the unit. In the picture to the privilege the positions are noted, however none are right now obvious to the unit. At the point when satellites get to be noticeable to the unit, little vertical lines will show up underneath the areas. At present no satellites are noticeable to the unit. NEXT

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Signal quality How to Locate Your Position cont.. Once the unit starts to get signals from the satellites it will show the quality of the signs on the screen. At the point when the unit has gotten great signs from no less than 4 satellites the screen will change to the "POSITION" screen. NEXT

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How to Locate Your Position cont.. POSITION SCREEN The position screen will show your: Latitude Longitude Elevation (height above ocean level) Speed you are voyaging in the event that you are moving. Separation went since last position mark. On the off chance that you are moving it will likewise show the course you are heading. NEXT

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How to Locate Your Position cont.. In this way your present position will be… Remember, for your estimation to be precise you should have the capacity to get signals from no less than four satellites. To do this you should be in the open and have as couple of snags amongst you and the sky as could be expected under the circumstances. NEXT

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How to Locate A Given Position Ok, we know how to discover precisely where we are. Presently we have to know how to locate a given position. A given position is basically the scope and longitude of an area. It could be the Statue of Liberty, or it could be a golf ball in a field. We are currently going to include the Latitude and Longitude of a given position into our GPS unit and after that explore our way there. BACK NEXT

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How to Locate A Given Position First we should be at the POSITION screen. On the off chance that you are not at this screen hit the NAV catch until the POSITION screen is in perspective. From the POSITION screen press the MENU catch. NEXT

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How to Locate A Given Position Cont.. Look down to PROJECTION utilizing the down bolt. When PROJECTION has been highlighted hit ENTER. This will raise the PROJECTION screen where we will enter in our Lat. furthermore, Long. NEXT

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How to Locate A Given Position Cont.. When you land at the PROJECTION screen the main number beside BRG will be highlighted. You should hit ENTER 3 times. This will highlight BRG and DST. Next we will hit the down bolt one time. NEXT

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How to Locate A Given Position Cont.. Presently LAT/LON ought to be highlighted. Hit enter once and just the main number under LAT/LON will be highlighted. By squeezing the all over bolts the number can be changed. By squeezing the left and right bolts we can go to the following number. NEXT

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How to Locate A Given Position Cont.. When you have completed the LAT (the top arrangement of numbers under LAT/LONG) you should press ENTER one an opportunity to have the capacity to drop down to LON. At the point when the LON has been entered press enter once and after that LAT/LON will be highlighted. The PROJECTION or given area has been entered. We should now transform our projection into a point of interest by squeezing MARK. NEXT

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How to Locate A Given Position Cont.. Make sure to take note of the point of interest number given by the unit, particularly in the event that you will attempt to explore to more than one area. You now need to hit the down bolt and highlight SAVE LMK, and hit ENTER. NEXT

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How to Locate A Given Position Cont.. Presently hit the GOTO catch. At that point select USER. This will raise a rundown of historic points that the client has entered. Look down and highlight the point of interest you just entered. NEXT

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How to Locate A Given Position

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