GPS tracking for more than 1 year, long life battery, long lasting battery 15400mAh
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GPS tracking for more than 1 year, long life battery, long lasting battery 15400mAh
- Q: What does GPS mean
- GPS principle24 GPS satellites orbiting the earth at an altitude of about 12 thousand kilometers from the ground, making it possible to observe more than 4 satellites at any point on the ground at any time, at any point in the.That due to the precise position of the satellite in the GPS observations, we can get the satellite to the receiver distance, the distance formula of three-dimensional coordinates, using 3 satellites, can be composed of 3 equations, solved observation point (X, Y, Z). Considering the error between the satellite clock and receiver clock, in fact there are 4 unknowns, X, Y, Z and clock, which requires the introduction of fourth satellites, the formation of 4 equations to solve, in order to get the observation points of latitude and longitude and elevation.In fact, the receiver can often be locked more than 4 satellites, then the receiver according to the distribution of the satellite constellation is divided into several groups, each group had 4 teeth, and then through the algorithm selected a set of minimum error for positioning, so as to improve the accuracy of.Due to the orbit of the satellite, the satellite clock error, the impact of the atmospheric troposphere and ionosphere on the signal, as well as the artificial SA protection policy, the positioning accuracy of civil GPS is only 100 meters. In order to improve the positioning accuracy, commonly used differential GPS (DGPS) technology, the establishment of base station (differential Taiwan) were observed in GPS, using the known exact coordinates of the base station, compared with the observed values, so that a number of amendments, and released. After receiving the correction, the receiver compares with the observed values, eliminates most of the errors, and obtains a more accurate position. The experimental results show that the positioning accuracy can be increased to 5 meters by using differential GPS.
- Q: How to pay for the satellite locator on the car, how much to pay?
- Now can renew the.1, take a look at the latest version of the 1.2.4 car life 2 mobile phone APP?If it is not the first to install a;If so, you can directly log on the phone APP car life 2";2, to enter the home page, choose their own locator, then you can pop up a dialog box in the map page;3, from the dialog box, click the "more" button;4, and then in the "more" button in the pop-up page select "recharge renewals" can self renew;
- Q: What is a GPS positioning system?
- Positioning principle of GPS systemThe GPS system uses the high orbit ranging system, taking the distance between the observation station and the GPS satellite as the basic measurement. In order to get the distance measurements, mainly use two methods: one is the measurement of the GPS satellite signal arrival time spread ranging code user receiver, i.e.pseudorange measurement; one is the phase between the reference carrier signal carrier Doppler frequency shift GPS satellite carrier signal and receiver with differential measurement, namely carrier phase measurement. The pseudo range measurement is the fastest, while the carrier phase measurement is the highest. The three-dimensional position of the receiver can be calculated by measuring the distance of 4 or more than 4 satellites.#
- Q: How to locate the location of a private car with a mobile phone?
- The second step: install SIM cardThe SIM card in the GPS positioning system plays an important role, that is to say a GPS locator for the acquisition of latitude and longitude data acquisition terminal, to the latitude and longitude data, through the SIM card of the GSM network in the form of GPRS to transmit data to the specified background, the final form of positioning and monitoring system.Note: make sure that the GPS positioning terminal is inserted into the SIM card on the condition that it is not energized.
- Q: How to find whether the car was installed GPS positioning
- If you are installing, others, others want to check your position. A remote mobile phone module that GPS equipment, so it was clear, as long as you go to the market to buy a mobile phone signal tracing electronic equipment is good, buy. Take this stuff in your car search, soon find the installation location! Or to the electronic market to buy a mobile phone signal or GPS signal shielding jamming equipment is good, is not very expensive, so no matter is not installed, others can not find your position! Some car guys have the equipment, so the installation of GPS anti-theft device is blocked, the basic on the waste!
- Q: GPS locator on the flow of electric vehicles and mobile phone traffic can be shared
- Not work. Dissimilarity the locator card and cell phone card is not the same, and then, only 30M traffic locator
- Q: GPS car locator easy to use, useful to share the experience of what I recommend to buy what kind of real
- Xi'an Shaanxi science and technology GPS price is reasonable, cost-effective, good service
- Q: Hello, not much, because it has a very low quiescent current!
- Third: more advanced. Just send text messages: JT or JT# to the device's phone number, the device back to you pull. So do not open to show. Such as Wei Tong star, smart star brand is this way.These have a problem, it is necessary to use the local card, or roaming calls expensive.
- Q: Expert advice, which GPS locator is better?
- With the P worm personal locator oh! The utility model has the advantages of low electric alarm, artificial shutdown alarm, fence alarm, exit channel alarm, SOS emergency alarm, accurate positioning, long standby time, small head, and only the size of a matchbox!
- Q: Wrong track GPS locator equipment, track points about inconsistent with the actual position?
- Resolvent：1, the installation position as far as possible not too close, do not have metal shielding.2, if there is no law always often fluttering, to look at is not traveling to a specific location will occur when the drift, probably because some place signal condition is not good (such as underground parking, tunnel, alley, high-rise and magnetic field environment).
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GPS tracking for more than 1 year, long life battery, long lasting battery 15400mAh
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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