satellite navigation,likeGPS deviceIt uses satellites to get your position. These are usually equipped with a map and tell you the scheduled route, or calculate the route to the destination.
Global Positioning System has been used for boating and hiking for many years, but recently, it has included a convenient way to navigate the road by driving or walking by GPS route map device. Individual GPS navigation devices can be purchased for about $100, and smartphones usually include GPS navigation as part of the standard suite of apps. Other navigation applications can be downloaded. There are some navigation applications that allow maps to be downloaded and stored on the phone; this may be particularly useful when domestic tourists have poor mobile data and international tourists do not want to pay for the data service block during the trip.
If you are traveling more than 50 miles/80 kilometers, please turn off the device first. It may take about 20-30 minutes before you cooperate with GPS satellite navigation. As long as you are about to reach the landmark in it, you must turn on the device, so you will not wait for the device as necessary. Some brands, such as TomTom, will provide weekly Internet downloads to gradually shorten the startup time, and the device will also display its previous location when it was turned on. This is for general daily use, and will save about a few minutes. However, once you are too far on the way and the device is turned off, the device will not help.
Navigation app
If you already own a smart phone, the built-in application will save you the cost of buying an individual GPS device, or renting a device from a car rental company. In addition, when the mobile phone signal is working, the application can provide more functions and quick fixes. However, once the signal range is exceeded, the performance of this application is often poor. These usually have less suitable user interfaces for cars.
Some applications allow maps to be automatically downloaded to the "memory card" of the smartphone before departure, so as to avoid consuming expensive data on the mobile phone network while on the move. Android is slightly better than Apple's in this regard as an additional flash memory, which can be purchased by adding a "Micro SD" card to the mobile device.
If you want to change the availability of road segment instructions between apps, it may not be included in some free apps.
HERE (formerly Nokia Maps)
HERE Map’s free application not only provides services on Nokia and Microsoft Lumia phones, but also runs on other operating systems, including iOS, Android and Firefox OS. Here map provides positioning services, geographic information systems and government solutions. Provide electronic maps through Bing, MapQuest and Yahoo Maps. Here map has more than 200 country maps, provides voice navigation in 94 countries, provides traffic information in 33 countries, and provides indoor maps for 49,000 characteristic buildings in 45 countries. In addition, the HERE map includes information on buildings, parks, and transportation, and it also provides navigation to commercial companies, such as Garmin, BMW, Amazon, and Oracle.
CoPilot GPS
A map of a country can be downloaded for free and used with limited functions. Many maps can be upgraded to voice-guided navigation and need to be purchased for US$24.99.
CoPilot GPS coversBrazil、Australia、New Zealand、America、Canada、U.K、Ireland、Balkans、Benelux League、Russia、Eastern Europe、EthicsOhRui(DACH),France、Greece、Spain、Italy、Northern Europe、Poland、Romania、Turkey、Ukraine、South Africa、Lesotho、Swaziland、NamibiawithBotswanamap. But also coversmiddle Eastmap(Bahrain、Jordan、Kuwait、Lebanon、Oman、Qatar、Saudi Arabia、United Arab Emirates）。
MAPS.ME
Free of chargeGoogle PlaywithiOS App Store，MAPS.MEAllow all OpenStreetMap (OSM) world maps (each province or each country can be selected) to Android flash card or partial download. If you have a large-capacity Micro SD card on your Android as additional storage space, you can also download the entire world map, so this is the only feasible option.
OsmAnd
can useGoogle PlaywithiOS App Store. It is a map of OpenStreetMap (OSM).
Free app and OSM map.
Andorra、Argentina、Australia、Austria、Benelux League（Belgium、Netherlands、Luxembourg），Brazil、Canada、Croatia、Czech Republic、Denmark、Estonia、Finland、France、Germany、Hungary、India、Ireland、Italy、Latvia、Lithuania、Mexico、Monaco、Netherlands、New Zealand、Norway、Poland、Portugal、Slovakia、Slovenia、South Africa、Spain、Sweden、Switzerland、U.K。
Gaode Map, Baidu Map, Tencent Map
Free car navigation, route planning (self-driving, walking, railway, bus, bicycle, etc.), street panorama, road condition information, and offline map downloading services are provided free of charge. Some map applications also have built-in shared bicycle and taxi services, as well as scenic spot information details and heat maps, but Limited toChina Mainlandarea.
problem
Although GPS navigation system, it is very easy to use navigation and positioning in many cases, and it does not need to spend money. In some cases, the information provided by the device may be misleading. And some navigation and positioning technology, and some experience with the device, will need to make judgments and deal with these situations. For example, in some electronic devices, the device may fail, and the place you want to go may not be completely judged by this device, and it may not be able to be used at bad times.
Not allmapAll can be accurate, reliable and up-to-date. Whether they are usually difficult to know without local experience (most map manufacturers will do their best in most promises). The fact that the road or waterway is on the GPS map does not guarantee that the road is available, or that the waterway in real life is exactly where it is.
Especially when paper maps are availablecoordinate systemWhen comparing WGS84 (used by GPS), you will get some wrong absolute positions, unless you have used the calibration data, but please check in advance. If you areU.K、FranceorSpain, Don’t forget to check the east () and west (-) longitude coordinates carefully, because these countries also have different places.
someCondition, The device will not work, and even some devices will appearstrangenessInformation. Some devices (or apps) represent that driving can take you on any nearby road, while walking or sailing. Regarding the location, although most situations will be accurate, sometimes it may be because some roads have been closed and other factors. In dense forests or heavy rains or the like, the device may not be able to find satellites. Most devices even have a standstill, which may cause some confusion when the driver makes a sharp turn.
Some manufacturers (such as Garmin) market provide specialized services specifically for marine use. The basic satellite signals are the same, but marine GPS uses nautical charts (usually purchased separately) instead of road maps. If you use this on a highway, the device will display valid coordinates and it will show that you have run aground.
The device should be in its intended useuse. The device used during driving should allow him or her to concentrate on driving. Devices used outdoors should have rain and moisture resistance. This control method should also be used in this area, and it should be fully displayed in bright sunlight and hazy night.
The device may sometimes workfail. You should make some extra preparations, usually including preparing a paper map and a note paper or notebook about where you are; and the note paper or notebook must record the time and the direction of the last update (depending on the situation, there are relevant The record is enough).
The route suggested by the device should be evaluated more. When using a positioning system in off-road, the shortest path is almost unsuitable, so you should be able to find your way (and choose) to route in the traditional way. When driving on general roads, the "shortest path" may be the best, but there may also be dead ends or unusable roads. The "fastest path" is more reliable, but it may still be hindered by road engineering. The GPS that is transferred to the road section may not be known; on the other hand, if the manufacturer’s cartographer inadvertently ignores the local airport or military base and other places, assuming there is a major airport’s main runway nearby, the device may fail. Error indication information that was mistaken for a shortcut. However, for other route records such as boating, driving a boat, swimming, etc., the device will also be misjudged as the route of the road.
If you are driving a large vehicle such as a double-decker bus, a large car, or a truck, please always pay attention to whether there is a height restriction on the underground passage or other roads, because the GPS navigation device cannot assist in identifying which road section has a height restriction; but if it is normal There is no such problem for the new small car.
In most cases, the screen is small andRecognition rateNot as good as a paper map. There is a trade-off between this resolution and portability; a laptop equipped with a GPS receiver with USB will display more details, but laptops are very heavy and power-hungry, so that they are rarely used. one. Whether you are planning and from time to time, you may need to use a paper map with a comprehensive route. The zoom function on the navigation device is only a small help, because you need more details than when you zoom out.
The use of satellite navigation devices consumes considerableelectricity. Driving by car is a minor problem (unless you forget to charge it in the car), but it can be a serious problem if you are backpacking in the wilderness.
alternative plan
However, there are some other GPS satellite navigation systems, such as mid-2014, and none of them seem to be fully developed or universal. The governments of some countries are quite disgusted with the idea of relying on GPS becauseAmericaThe government controls GPS satellites and can be manipulated to serve political purposes.
andChina、IndiawithJapan, Already has a regional system of its own, covering a part of the world, andRussiaHas a global system and is in operation.European UnionGalileo andChinaThe Beidou satellites are expected to provide a global satellite navigation system after 2020.