About High Accuracy Personal Portable GPS Tracker
GPS - the Global Positioning System - is a navigation revolution. It’s a technology that pinpoints a user’s location anywhere in the world, 24 hours a day, regardless of the weather. Designed by the United States’ Department of Defense for use by the military, the GPS System was made available to civilians for use in aviation, marine surveying and general outdoor/recreation markets. Today, millions of people utilize the accuracy and convenience of this amazing technology to hunt, fish, hike, fly, cruise and sail. GPS consists of a constellation of 24 satellites orbiting some 12,000 miles above the earth. These satellites transmit signals containing time and orbital data to calculate satellite position and almanac data. Meanwhile, receivers used on the ground, sea and air search the sky for the satellites. The GPS unit needs to acquire good signals from at least three satellites to determine a position on the surface of the earth. A fourth signal is required to get three-dimensional positioning
which determines elevation or altitude.
Recent innovations in tracking device have introduced ways to enhance precision, availability, and reliability in advanced receivers. These innovations address mitigation of multipath errors, receiver (antenna center) stability, and data reliability under adverse signal conditions. Adverse conditions arise from partial obstructions like canopies and light trees that make satellite signals weak, interference from other communication systems (radio and TV broadcasts, radar, communication satellites, etc.), interference from power lines and transformers, high levels of ionospheric activities that make tracking of L2 signal harder, abrupt motions of the receiver, or momentary signal interruptions like going through a short tunnel that temporarily blocks all satellites. Some of the methods used to deal with these problems are unique to specific receivers, the details of which are beyond the scope of our discussion but may be found in the manufacturers' literature.
We’ve all seen news alerts for missing senior citizens. Sometimes those have a happy outcome, and other times they don’t. I’m sure parents of kids with special needs also live with the worry that their child might wander off and get lost. The devices we’re looking at today could help folks find their missing loved ones, but they aren’t cheap or effortless to use. I’m talking about portable GPS tracking devices that can be attached to a key ring or worn on a chain. I suppose if you have a big enough issue with pets running off, they could be used on your dog’s collar. We’ve all seen commercials that feature a senior citizen who has fallen and needs help. Think of these gadgets like that help button, but they work from almost anywhere. GPS tracking devices have long been used by secret agents in the movies and in real life, but until recently, they’ve been too big and too expensive to appeal to the public.
A portable GPS system will usually guide you to your destination. The highest-rated GPS models make it especially easy to enter destinations and they give the most helpful directions. A Portable GPS system can be used in many ways, and is a great tool to own. For example, you can use a GPS tracking device in your vehicle to help you find your way while you are driving to a new location. You can also use it on a boat when you are fishing, if you are taking a long bike ride, or going on a hike. Using a GPS system, you will never get lost again.
portable GPS tracking is a powerful GSM/GPS safety phone designed mainly for children/elderly/luggage/pets. Its built-in GPS receiver has superior sensitivity and fast time to first fix. Quad band GPRS/GSM subsystem of this GPS tracking equipment supports 850/900/1800/1900 MHz. System integration is straightforward as complete documentation is provided for the full featured function. It supports a wide variety of reports including emergency, geo-fence boundary crossings, low battery and SOS alarm.
1. Two-way Communication
Tracking is no longer passive. The tracker supports two-way communication with pre-set family numbers and numbers from the white list, which makes it convenient for family numbers to communicate with anyone carrying it.
2. Geo-fence Alarm
A geo-fence can be set by SMS command to provide a safety net for your loved ones. When anyone carrying the tracker walks in/out of the fence, SOS numbers will receive alarm.
3. SOS Alarm
There will be SOS button for emergency SOS alarm. Anyone carrying the tracker can long press the SOS button to activate SOS alarm. SOS alarm and location will be sent to pre-set SOS numbers.
installation
install/remove sim car
1.turn off the terminal
2.open the USB rubber plug
3.put the GSM SIM card in the SIM card slot until you hear the "click"sound.
4.please turn the terminal off before you remove the SIM card.
Power on/off
long press "ON/OFF"button to turn the device on/off
Charging battery
Red LED light flashing quickly means the battery is low and needs recharge. Also please
charge it before use at the first time.
1. charging process may take around 4-6 hours.
2.if the RED LED is continuously bright,it means it is charging. if the RED LED is flashing slowly,then it means it is fully charged.
Call family numbers
long press family number buttons can call present numbers. short press SOS button can hang off the call.
Answer phone calls
you can pick up the call by short pressing one of family number buttons,turn on the speaker by long pressing one of family number buttons,or reject/hang off the call by short pressing SOS button.
Set white list
Normally,the terminal can only answer phone calls from SOS number and family numbers. white list numbers could also call in,to add white list numbers you need to login the platform(15 white list numbers maximum).
Control volume
During the call,short press family number 1 button to turn up the volume and
family number 2 button to turn down the volume. when the volume reaches the limit,the button light will be all bright.
operation
Arm/disarm
1.Via mode button
short press the mode button twice in a row to arm the terminal, and short press the mode button twice in a row again to disarm the terminal
2.Via calls
you can use one of SOS numbers to call the terminal,and then hang up within 10s to arm the terminal. The terminal will reply a SMS message "remote fortification success". Call the terminal again and hang up (within 10s)to disarm the terminal. The terminal will reply a SMS message "remote disarm success".if the call does not hang up after 10s,it will enter into the monitoring status.
3.Via SMS command
Any SOS number can send SMS command"111"to arm the terminal(must be the SOS number).And it will automatically reply "OK"if set successfully. Any SOS number can send SMS command"000"to disarm the terminal(must be the SOS number).And it will automatically reply "OK"if set successfully.
More electronic tracking devices at http://www.jimilab.com/ .
which determines elevation or altitude.
Recent innovations in tracking device have introduced ways to enhance precision, availability, and reliability in advanced receivers. These innovations address mitigation of multipath errors, receiver (antenna center) stability, and data reliability under adverse signal conditions. Adverse conditions arise from partial obstructions like canopies and light trees that make satellite signals weak, interference from other communication systems (radio and TV broadcasts, radar, communication satellites, etc.), interference from power lines and transformers, high levels of ionospheric activities that make tracking of L2 signal harder, abrupt motions of the receiver, or momentary signal interruptions like going through a short tunnel that temporarily blocks all satellites. Some of the methods used to deal with these problems are unique to specific receivers, the details of which are beyond the scope of our discussion but may be found in the manufacturers' literature.
We’ve all seen news alerts for missing senior citizens. Sometimes those have a happy outcome, and other times they don’t. I’m sure parents of kids with special needs also live with the worry that their child might wander off and get lost. The devices we’re looking at today could help folks find their missing loved ones, but they aren’t cheap or effortless to use. I’m talking about portable GPS tracking devices that can be attached to a key ring or worn on a chain. I suppose if you have a big enough issue with pets running off, they could be used on your dog’s collar. We’ve all seen commercials that feature a senior citizen who has fallen and needs help. Think of these gadgets like that help button, but they work from almost anywhere. GPS tracking devices have long been used by secret agents in the movies and in real life, but until recently, they’ve been too big and too expensive to appeal to the public.
A portable GPS system will usually guide you to your destination. The highest-rated GPS models make it especially easy to enter destinations and they give the most helpful directions. A Portable GPS system can be used in many ways, and is a great tool to own. For example, you can use a GPS tracking device in your vehicle to help you find your way while you are driving to a new location. You can also use it on a boat when you are fishing, if you are taking a long bike ride, or going on a hike. Using a GPS system, you will never get lost again.
portable GPS tracking is a powerful GSM/GPS safety phone designed mainly for children/elderly/luggage/pets. Its built-in GPS receiver has superior sensitivity and fast time to first fix. Quad band GPRS/GSM subsystem of this GPS tracking equipment supports 850/900/1800/1900 MHz. System integration is straightforward as complete documentation is provided for the full featured function. It supports a wide variety of reports including emergency, geo-fence boundary crossings, low battery and SOS alarm.
1. Two-way Communication
Tracking is no longer passive. The tracker supports two-way communication with pre-set family numbers and numbers from the white list, which makes it convenient for family numbers to communicate with anyone carrying it.
2. Geo-fence Alarm
A geo-fence can be set by SMS command to provide a safety net for your loved ones. When anyone carrying the tracker walks in/out of the fence, SOS numbers will receive alarm.
3. SOS Alarm
There will be SOS button for emergency SOS alarm. Anyone carrying the tracker can long press the SOS button to activate SOS alarm. SOS alarm and location will be sent to pre-set SOS numbers.
installation
install/remove sim car
1.turn off the terminal
2.open the USB rubber plug
3.put the GSM SIM card in the SIM card slot until you hear the "click"sound.
4.please turn the terminal off before you remove the SIM card.
Power on/off
long press "ON/OFF"button to turn the device on/off
Charging battery
Red LED light flashing quickly means the battery is low and needs recharge. Also please
charge it before use at the first time.
1. charging process may take around 4-6 hours.
2.if the RED LED is continuously bright,it means it is charging. if the RED LED is flashing slowly,then it means it is fully charged.
Call family numbers
long press family number buttons can call present numbers. short press SOS button can hang off the call.
Answer phone calls
you can pick up the call by short pressing one of family number buttons,turn on the speaker by long pressing one of family number buttons,or reject/hang off the call by short pressing SOS button.
Set white list
Normally,the terminal can only answer phone calls from SOS number and family numbers. white list numbers could also call in,to add white list numbers you need to login the platform(15 white list numbers maximum).
Control volume
During the call,short press family number 1 button to turn up the volume and
family number 2 button to turn down the volume. when the volume reaches the limit,the button light will be all bright.
operation
Arm/disarm
1.Via mode button
short press the mode button twice in a row to arm the terminal, and short press the mode button twice in a row again to disarm the terminal
2.Via calls
you can use one of SOS numbers to call the terminal,and then hang up within 10s to arm the terminal. The terminal will reply a SMS message "remote fortification success". Call the terminal again and hang up (within 10s)to disarm the terminal. The terminal will reply a SMS message "remote disarm success".if the call does not hang up after 10s,it will enter into the monitoring status.
3.Via SMS command
Any SOS number can send SMS command"111"to arm the terminal(must be the SOS number).And it will automatically reply "OK"if set successfully. Any SOS number can send SMS command"000"to disarm the terminal(must be the SOS number).And it will automatically reply "OK"if set successfully.
More electronic tracking devices at http://www.jimilab.com/ .
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