Introduction to GPS MapEdit & GPS SendMap
卫星导航系统英语作文

Title: The Importance and Impact of Satellite Navigation SystemsIn today's fast-paced world, satellite navigation systems have become an integral part of our daily lives. These systems, such as the Global Positioning System (GPS), have revolutionized the way we travel, navigate, and communicate with each other.The fundamental purpose of satellite navigation systems is to provide accurate position and time information to users anywhere on or near the Earth's surface, regardless of weather conditions. This capability has transformed various industries and aspects of our daily lives.One of the most significant impacts of satellite navigation systems is in the field of transportation. With the integration of GPS devices into most vehicles, drivers can now easily navigate to their destinations with real-time traffic information, alternative routes, and estimated arrival times. This has significantly improved the efficiency of transportation systems, reducing congestion and travel time.Moreover, satellite navigation systems have also revolutionized the maritime industry. Ships and boats can now navigate vast oceans and seas with pinpoint accuracy, avoiding potential hazards and ensuring safe passage. This has increased the safety of maritime travel and reduced the risk of accidents.In addition to transportation, satellite navigation systems have also had a profound impact on other industries. For example, in the field of agriculture, farmers can now use GPS-enabled equipment to precisely map their fields and apply fertilizers and pesticides more efficiently. This has not only improved crop yields but also reduced the use of chemicals, making agriculture more sustainable. Furthermore, satellite navigation systems have also played a crucial role in emergency response and disaster relief. In times of natural disasters or emergencies, these systems can provide critical information to responders, enabling them to locate affected areas and provide timely assistance.Overall, satellite navigation systems have become an indispensable tool in our modern world. They havetransformed the way we travel, navigate, and communicate with each other, making our lives more efficient, safer, and sustainable. As technology continues to advance, we can expect satellite navigation systems to play an even more significant role in the future.。
introduction to GPS

H. S. Raihs@raFeb 01, 2010
1.
Why GPS?
Trying to figure out where you are and where you’re going is probably one of man’s oldest requirement / pastimes. Navigation and positioning are crucial to so many activities and yet the process has always been quite cumbersome. Over the years all kinds of technologies have tried to simplify the task but every one has had some disadvantage. Finally, the U.S. Department of Defense decided that the military had to have a super precise form of worldwide positioning. And fortunately they had the kind of money ($12 billion!) it took to build something really good.
Figure 2: Hand Held GPS
3.
How GPS works?
Here’s how GPS works in five logical steps: 1. The basis of GPS is “triangulation” from satellites. We’re using the word “triangulation” very loosely here because it’s a word most people can understand, but purists would not call what GPS does “triangulation” because no angles are involved. It’s really “trilateration”. Trilateration is a method of determining the relative positions of objects using the geometry of triangles. 2. To “triangulate”, a GPS receiver measures distance using the travel time of radio signals.
全球定位系统英文作文

全球定位系统英文作文Global Positioning System, or GPS, is a satellite-based navigation system that allows users to determine their precise location and time. It was originally developed by the United States government for military use, but now itis widely used by civilians for various purposes such as navigation, mapping, and tracking.GPS works by using a network of at least 24 satellites orbiting the Earth. These satellites continuously transmit signals that can be picked up by GPS receivers on the ground. By calculating the time it takes for the signals to travel from the satellites to the receiver, the GPS receiver can determine the distance to each satellite and use this information to triangulate its own position.One of the key features of GPS is its accuracy. With the use of multiple satellites, GPS can provide a very precise location, often within a few meters. This level of accuracy has made GPS an essential tool for activities suchas aviation, surveying, and outdoor recreation.In addition to providing location information, GPS also offers a precise timing reference. This timing information is crucial for many applications, including telecommunications, financial transactions, and scientific research.GPS has become an integral part of modern life, with applications ranging from personal navigation devices and smartphones to vehicle tracking systems and precision agriculture. Its widespread use has revolutionized the way we navigate and interact with the world around us.Despite its many benefits, GPS is not without its limitations. Its signals can be blocked or degraded by tall buildings, dense foliage, or atmospheric conditions, which can affect its accuracy. In addition, GPS signals can be vulnerable to intentional interference or jamming, posing a potential security risk.In conclusion, GPS has had a profound impact on ourdaily lives, enabling us to navigate with unprecedented accuracy and precision. Its widespread use and diverse applications make it an indispensable tool in the modern world. However, it is important to be aware of its limitations and potential vulnerabilities as we continue to rely on GPS for navigation and timing.。
北斗导航定位系统英语作文

北斗导航定位系统英语作文The Beidou Navigation Satellite System (BDS) is a global navigation satellite system developed by China. It is named after the Chinese term for the Big Dipper, a star constellation which has been used for navigation in China for thousands of years. The Beidou system provides users with accurate positioning, navigation, and timing services.The Beidou system consists of three main components: the space segment, the ground segment, and the user segment. The space segment includes a constellation of satellites that orbit the Earth, providing global coverage. The ground segment consists of monitoring and control stations that track and manage the satellites. The user segment includes the receivers and devices that utilize the Beidou signals for navigation and timing.One of the key features of the Beidou system is itsability to provide highly accurate positioning and timing information. This is crucial for a wide range of applications, including transportation, agriculture, disaster relief, and security. With its advanced technology and global coverage,the Beidou system has become an important tool for various industries and government agencies around the world.In addition to its civilian applications, the Beidou system also has important military and strategic implications. It can provide China with independent and secure positioning, navigation, and timing capabilities, reducing its reliance on foreign systems. This has significant implications fornational security and defense, as well as for China's global influence and leadership in space technology.The development and deployment of the Beidou system is a significant achievement for China's space program. It represents a major technological advancement and demonstratesChina's growing capabilities in space technology andsatellite navigation. The Beidou system also reflects China's commitment to international cooperation and contribution to global technological advancement.As the Beidou system continues to expand and improve, it is expected to play an increasingly important role in global navigation and positioning. Its advanced technology and comprehensive coverage make it a valuable asset for a wide range of users, from commercial and civilian applications to military and strategic uses. The Beidou system is a testament to China's ambition and innovation in space technology, andit will undoubtedly shape the future of global navigation and positioning.。
卫星定位实景地图英语作文

卫星定位实景地图英语作文The Marvels of Satellite Positioning in Real-Life Mapping。
In today's technologically advanced era, satellite positioning has revolutionized the way we perceive and interact with maps. Through the intricate network of satellites orbiting our planet, we are now able to access real-time, high-definition maps that provide an unprecedented level of detail and accuracy. This essay delves into the marvels of satellite positioning in real-life mapping, exploring its impact on various aspects of our lives.First and foremost, satellite positioning has transformed the navigation landscape. Gone are the days when travelers relied solely on paper maps or vague directions from strangers. With the advent of GPS (Global Positioning System) technology, anyone with a smartphone or a GPS device can pinpoint their exact location and chartthe most efficient route to their destination. Whether navigating through bustling city streets or traversing remote wilderness, satellite positioning ensures that travelers never lose their way.Moreover, satellite positioning plays a pivotal role in disaster management and emergency response. During natural disasters such as hurricanes, earthquakes, or floods, accurate mapping is crucial for coordinating rescue efforts and delivering aid to affected areas. Satellite imagery provides emergency responders with real-time insights into the extent of damage, allowing them to prioritize their interventions and allocate resources effectively. Furthermore, the integration of satellite data with Geographic Information Systems (GIS) enables authorities to create detailed risk maps, identifying vulnerable areas and implementing preventive measures to mitigate potential hazards.In addition to its utility in navigation and disaster management, satellite positioning has myriad applicationsin urban planning and environmental conservation. Byoverlaying satellite imagery with demographic data andland-use patterns, urban planners can make informed decisions about infrastructure development, zoning regulations, and resource allocation. Similarly, environmental scientists leverage satellite data to monitor changes in land cover, track deforestation, and assess the health of ecosystems. This information serves as a valuable tool for policymakers and conservationists striving to protect our planet's natural resources and biodiversity.Furthermore, satellite positioning has revolutionized industries such as agriculture, transportation, and logistics. In agriculture, precision farming techniques utilize GPS technology to optimize crop yields, minimize input costs, and reduce environmental impact. By precisely mapping soil composition, moisture levels, and crop health, farmers can tailor their cultivation practices to maximize productivity while conserving resources. Likewise, in the transportation and logistics sector, satellite tracking systems enable fleet managers to monitor vehicle movements, optimize route planning, and ensure timely delivery of goods. This not only enhances operational efficiency butalso reduces fuel consumption and carbon emissions.Beyond its practical applications, satellitepositioning has also transformed leisure and entertainment experiences. Mapping platforms such as Google Maps and Apple Maps offer users immersive, street-level views of virtually any location on Earth. Whether exploring the bustling streets of a foreign city or embarking on avirtual tour of natural wonders, individuals can satisfy their wanderlust from the comfort of their homes. Furthermore, augmented reality (AR) technologies are leveraging satellite data to create interactive experiences that blend the virtual and physical worlds, enrichingusers' understanding of their surroundings and fostering a deeper appreciation for the world we inhabit.In conclusion, satellite positioning has emerged as a cornerstone of modern mapping technology, revolutionizing the way we navigate our world and interact with geographic information. From enabling precise navigation and emergency response to empowering sustainable development and environmental stewardship, its impact spans across variousdomains of human endeavor. As we continue to harness the power of satellite positioning, we unlock new possibilities for innovation, discovery, and collective progress. Truly, the marvels of satellite positioning in real-life mapping have reshaped our perception of space and time, ushering in a new era of spatial awareness and interconnectedness.。
第一次使用电子地图英语作文

第一次使用电子地图英语作文English Answer:My first encounter with digital maps proved to be a revelation, forever altering my perception of navigationand spatial orientation. I recall the initial bewilderment as I ventured into the realm of GPS-enabled applications,but gradually, a sense of wonder and fascination began to emerge.Unlike traditional paper maps, digital maps offered an interactive and dynamic experience. With just a few taps on the screen, I could zoom in and out, panning across vast landscapes and exploring intricate street grids. The GPS functionality transformed me from a passive observer to an active participant, pinpointing my location with remarkable accuracy and providing turn-by-turn directions in real-time.The intuitive user interface made digital maps accessible to people of all ages and skill levels. Theability to search for specific destinations, create custom routes, and even share my location with friends and family further enhanced the usability. Moreover, the wealth of information available on digital maps, such as traffic conditions, public transportation schedules, and local points of interest, proved invaluable during my travels.However, it is important to note that digital maps also presented certain drawbacks. The reliance on internet connectivity could sometimes prove problematic in remote areas or during periods of poor reception. In addition, the constant barrage of notifications and advertisements could be distracting and impede navigation.中文回答:我的第一次使用电子地图经历是一次启示,它永远地改变了我对导航和空间定位的理解。
GPS全球卫星定位导航系统简介

GPS全球卫星定位导航系统GPS全球卫星定位导航系统(Global Positioning System-GPS)是美国从本世纪70年代开始研制,历时20年,耗资200亿美元,于1994年全面建成,具有在海、陆、空进行全方位实时三维导航与定位能力的新一代卫星导航与定位系统。
经近10年我国测绘等部门的使用表明,GPS以全天候、高精度、自动化、高效益等显著特点,赢得广大测绘工作者的信赖,并成功地应用于大地测量、工程测量、航空摄影测量、运载工具导航和管制、地壳运动监测、工程变形监测、资源勘察、地球动力学等多种学科,从而给测绘领域带来一场深刻的技术革命。
随着全球定位系统的不断改进,硬、软件的不断完善,应用领域正在不断地开拓,目前已遍及国民经济各种部门,并开始逐步深入人们的日常生活。
GPS系统的特点:1、全球,全天候工作:能为用户提供连续,实时的三维位置,三维速度和精密时间。
不受天气的影响。
2、定位精度高:单机定位精度优于10米,采用差分定位,精度可达厘米级和毫米级。
3、功能多,应用广:随着人们对GPS认识的加深,GPS不仅在测量,导航,测速,测时等方面得到更广泛的应用,而且其应用领域不断扩大。
GPS发展在卫星定位系统出现之前,远程导航与定位主要用无线导航系统。
1、无线电导航系统●罗兰--C:工作在100KHZ,由三个地面导航台组成,导航工作区域2000KM,一般精度200-300M。
● Omega(奥米茄):工作在十几千赫。
由八个地面导航台组成,可覆盖全球。
精度几英里。
●多卜勒系统:利用多卜勒频移原理,通过测量其频移得到运动物参数(地速和偏流角),推算出飞行器位置,属自备式航位推算系统。
误差随航程增加而累加。
缺点:覆盖的工作区域小;电波传播受大气影响;定位精度不高。
2、卫星定位系统最早的卫星定位系统是美国的子午仪系统(Transit),1958年研制,64年正式投入使用。
由于该系统卫星数目较小(5-6颗),运行高度较低(平均1000KM),从地面站观测到卫星的时间隔较长(平均1.5h),因而它无法提供连续的实时三维导航,而且精度较低。
gps的应用英语作文

gps的应用英语作文英文回答:Applications of GPS.GPS (Global Positioning System) is a satellite-based navigation system that provides location and time information in all weather, anywhere on or near the Earth, where there is an unobstructed line of sight to four or more GPS satellites. GPS is used in a wide range of applications, including:Navigation: GPS is used in cars, boats, planes, and even smartphones to provide turn-by-turn navigation. This makes it easy to get to your destination, even if you're in an unfamiliar area.Surveying and mapping: GPS is used to survey land and create maps. This information can be used for a variety of purposes, such as planning construction projects, managingnatural resources, and tracking environmental changes.Tracking and monitoring: GPS is used to track the location of people, animals, and vehicles. This information can be used for a variety of purposes, such as locatinglost hikers, tracking the movement of endangered species, and monitoring the location of company vehicles.Precision agriculture: GPS is used in agriculture to improve the efficiency and precision of farming operations. This information can be used to optimize irrigation, fertilization, and harvesting.Emergency response: GPS is used by emergency responders to locate victims of natural disasters or other emergencies. This information can help them to get to the victims more quickly and efficiently.Military applications: GPS is used by the military for a variety of purposes, such as navigation, targeting, and reconnaissance.中文回答:GPS 的应用。
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GPS Map Edit – Creating the GPS Map
• Next, specify the coordinate system. This only has to be set the first time.
• Next, specify the Zoom Levels. If you only have one, click Finish.
GPS Map Edit – Creating the GPS Map
• Select objects of a certain type (symbol) either by using the select objects tool or if you have more than one type in a mp file, you can select all features of a certain type by going to edit, select, by type.
• Map Properties can be accessed with the properties button or at File Map Properties Zoom Levels
•Set automatically like this if you select start_template.mp in GPS MapEdit before you add any other shapefiles.
Introduction to GPS MapEdit & GPS SendMap
Creating and Uploading Background Maps for a Garmin GPS
Agenda
• • • • • 9:00 – Introductions 9:15 – GPS Map Edit – Preprocessing 9:45 – GPS Map Edit – Creating the GPS Map 10:45 – Break 11:00 – GPS Send Map – Uploading to your Garmin GPS • 11:15 – Using Background Maps with your Garmin • 11:45 – Tips and Questions
• After you have selected the objects, right click with the “select objects” tool over a selected object and modify the level of the elements selected.
GPS Map Edit – Creating the GPS Map
• Select a Symbol For Polygons Features
Use Large Urban area, Medium Urban Area, or small Urban area for Clear fill!
GPS Map Edit – Creating the GPS Map
A dialog box will appear. If it didn’t find the cGPSmapper.exe file, navigate to it. You should only have to do this once.
GPS Map Edit – Creating the GPS Map
• The result will be imported into a map window.
GPS Map Edit – Creating the GPS Map
• Notice that there are tools to zoom, pan and otherwise roam around the screen. You can select features and change their zoom levels and turn the labeling on or off. You can display grids, rulers and other pieces of information.
GPS Map Edit – Creating the GPS Map
• Program that allows you to build a map composition that can be saved and exported to the proper formats. • Properties you can set:
Compatible GPS Units
Background Maps vs Waypoints and Tracks
Background Maps • Large data storage (Varies by GPS model) • Separate memory location than Wpt/Tracks • Multiple map layers. Turn on/off like GIS • User specific symbology • Labels Waypoints/Tracks • Easier and faster to upload from Arcview or Landview • Data draws quicker on GPS • Can use with GPS Navigation Functions • Display in greater range of scale • DNRGarmin is easier to troubleshoot problems
• Map source
– Software comes with Garmin unit – maps can be purchased – Fishing Hotspots, Topo Maps – Does not allow for user customized maps.
ቤተ መጻሕፍቲ ባይዱ
• GPS MapEdit/GPS SendMap
GPS Map Edit – Creating the GPS Map
When finished creating the map, save your map document
– File Save As …
Export to an IMG file
– File Export Garmin IMG / cgpsmapper.exe – NOTE: Save to a location with NO SPACES in the path (ex. d:\myimgfiles\wmaboundaries.img)
GPS Map Edit – Preprocessing
• Create shapefile that is subset of data you want to use (land use polygons for a WMA, campsites for a state park, etc)
Exercise #1 - Preprocessing
GPS Map Edit – Creating the GPS Map
• Map Properties can be accessed with the properties button or at File Map Properties
ID - 8 Digit Unique ID MUST be entered for the map
Name – File name as displayed in the MapSource Info on your GPS Coding Schema – Make sure it is set to “American (7-bit)”
GPS Map Edit – Creating the GPS Map
GPS Map Edit – Creating the GPS Map
• Zoom levels should be defined correctly or the map won’t export to img format correctly. Once you’ve created them for a map, you can reuse the same .mp file as a template for other maps by using save as…
GPS Map Edit – Creating the GPS Map
• A single background map can be made up of a combination of point, line, and polygon features along with labels and symbology for each feature type (resulting map can resemble a PRIM map) • Keeping feature types as separate background maps may be best -- it gives the user more options for displaying certain features, just as if they were turning on/off GIS layers and labels in ArcView or Landview
• Open Program • File Import ESRI Shapefile • Depending on the type of shapefile you’ve selected (point, line or polygon) you will be presented with a dialog that allows you to select a symbol to use to represent the data in this shapefile.