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GPS Technology – A Must Read for Anyone Looking to Invest in GPS Trackers


Millions around the globe are using GPS vehicle tracking systems to monitor fleet and personal vehicles. Business users are realizing the benefits the systems provide in running smoother and more efficient logistics operations, while individual users are realizing the peace of mind GPS trackers provide keeping them informed that their family members are safe, and the vehicles secured. Various types of transportation apps-based services have been introduced in Bangladesh. Like Uber or Patho. Many industries and services like food and grocery chains are using transportation systems extensively. It is imperative for businesses success to keep track of these vehicles. Of all the telematics companies operating here, none come close to AutoGuard.

The number of companies that provide vehicle tracking services are growing daily. These companies are working tirelessly to improve and build on the technology. With that comes new and innovative features that add to the usefulness of GPS trackers. Unfortunately, it also comes with a dizzying array of functionalities, services, and issues that affect the reliability of these services that the customer must understand and decipher before deciding. Worry not. AutoGuard’s easy to use interface removes all the complexity on the users end while maintaining total tracking of your fleet vehicles.

Due to the complexity of the technology and the different features to select from, it can be difficult for customers to select the right vendor for their exact need. There are different companies that concentrate on different parts of the market. Some may concentrate in providing minimal location data, while others concentrate on providing comprehensive services that include – monitoring driver behavior, detailed speed monitoring, battery management, live tracking, cold chain logistics, and much more. Then there is us. The best VTS tracking system in Bangladesh. Providing the above-mentioned features and more. Giving you the whole spectrum of features necessary for a secure and fully functional vehicle tracking and fleet management.

No matter what type of vehicle tracking service the company provides, there are some specifics that you as a customer must research before selecting the vendor that is best for you. The goal of this article is to discuss these items, so you are educated about the technology and are equipped to ask the specific questions that help answer and clarify your GPS tracking needs and ultimately helps in selecting the right vendor.

What is GPS-based Vehicle Tracking System

A vehicle tracking system, in its simplest form, is the combination of GPS data received from satellites plus complex software technology to provide location and telematics (more on this later) data. Below is a graphical depiction of the how it works.

In a more detailed form, VTS is the combination of receiving of GPS data from satellites by a tracking unit installed in a vehicle, processing of the data by the unit using complex algorithms, and then transmitting of the data by the unit over cellular network to backend servers for further processing. Once the processing is complete , the telematics data is ready to be consumed by users on a PC or a mobile device.

Best real time GPS tracker

Telematics Data

Telematics is the term used to refer to vehicle or other asset monitoring data gathered by using a GPS device or other onboard technologies. Examples of telematics data include:

Location Distance Driven
Speed Arrival and Departure from Point
Idling Time Time at Point
Harsh Acceleration Tire-Pressure
Harsh Braking Battery Level
Fuel Consumption Key On/Off
Impact Detection Illegal Motion

There are many moving parts involved in processing the telematics data and they all must work in harmony to make sure the transmitted data is accurate and reliable. This article delves into each of these parts and explains how they work, how they can negatively impact each other’s functions, and what measures need be taken to ensure overall accuracy and reliability of the GPS tracking system and why AutoGuard comes atop them all.

Additionally, the article will attempt to point out questions you should ask and pitfalls to avoid of when selecting a VTS vendor and why you should select us without any dilemma.

Accuracy & Reliability of The System

No vendor can guarantee 100% accuracy, reliability, or availability of any fleet management system. As the system is composed of many moving parts, it is possible that one or more of these parts will time to time misbehave rendering the system unstable. However, for an effectively managed vehicle tracking system, this should be a rare occurrence with 99.5% of the time the system functioning as expected which we ensure as the leading GPS tracker company.

Here is a brief description of the various segments of a vehicle tracking system. Details of how each segment works. Some of the pitfalls to look out for. And questions to ask when selecting your GPS tracker vendor. They simultaneously answer why you should pick us instead of other vendors.

Satellite Coverage

The key to spotting accurate location with its correct latitudinal and longitudinal coordinates is how well the GPS tracker “sees” the satellites roaming around at 20,000 KM above the earth. The unit needs data from at least four satellites to perform complex distance and time calculations to arrive at the most correct coordinates of the location. The more satellites the device receives data from, the better would be the accuracy of the location data. Generally, 7 to 8 satellites are needed to calculate an accurate GPS location. Most quality tracking applications, like ours, will show the number of satellites used in the calculation and then display that information to the end user to communicate the quality of the GPS data.

Things that can negatively affect satellite to device coordinate calculation are:

  • 1. Poorly manufactured GPS devices using cheap component. Many times, these manufacturers will tout accuracy of +/- 2.5M. But the main challenge is to generate that level of accuracy consistently. It requires a well manufactured device using high quality GPS antenna which our GPS tracking devices provide.
  • 2. Vehicles travelling underground or parked under heavily constructed garage. Concrete or metal walls can impact satellite reception thus affecting location data.
  • 3. Reflection, shadowing and all kinds of distortions can cause GPS drift. It is when the tracking deviates from the road. Resulting in decreased precision.

GPS Device

The key to a reliable and accurate vehicle tracking system is the installation of a well-made, rugged, GPS tracker. One that can take the wear and tear of the vehicle as well as that of the road and generate consistent GPS and telematics data for many years. When researching for a vendor ask about the quality of the device and verify that the device uses quality components. For example, if the GPS antenna component used in the device is not of good quality, the location data you will receive will not be accurate or consistent. If the accelerometer component is of poor quality, then driver behavior data or illegal motion messages may not be accurate.

Communication Protocol

When shopping for a GPS tracker, ask about the communication protocol the vendor utilizes. We will not go too deep into the communication protocols, but here is a brief description of how communication protocols can vary:

In general, there are two different communication protocols that most GPS trackers implement – TCP/IP or UDP. Here are the pros and cons of the two:

Pros Cons
TCP/IP Cheaper Device Uses Too Much Data
Easier to Implement Needs Stable Cellular Network
More Vendors High Latency (meaning takes too long to deliver message)
UDP Uses Less Data Device More Expensive
Highly Reliable Difficult to Implement
Low Latency (fast delivery of GPS message to customers) Fewer Device Manufacturers

AutoGuard uses UDP technology to transmit your GPS data. We have invested heavily in IT infrastructure and software algorithm to make sure we offer our customers the most reliable and powerful data transmission to deliver on our promise of reliability and accuracy.

Over-the-Air Updates

Another device capability the GPS tracker users should be aware of is FOTA or Firmware Over the Air updates. Device manufacturers are constantly making improvements to the onboard firmware (computer program that is installed on the tracker), and these improvements need to be sent to the devices for continuous smooth operation. To make sure your GPS tracker(s) can easily be updated, you must inquire whether the GPS tracker you are purchasing can handle over the air updates. With over the air updates, vehicle tracking companies can push these changes to devices anywhere in the country. There is no need to stop vehicle service or your business to make the update. Over the air feature also allows your vendor to manage many devices efficiently which minimizes cost and risk associated with managing fleet GPS devices.

The devices AutoGuard sells support over the air updates. As a result, we can push any enhancement to your GPS tracker unit anywhere in the country. There is no need to stop vehicle service or your business to make the update. Over the air feature also allow us to manage many devices efficiently which minimizes cost and risk associated with managing fleet GPS devices.

GPS Tracker Device Input/Output [I/O]

Other device specific features you should be aware of:

  • 1. Number of I/O connections that are available for a device. For example, let us say you want a GPS tracking device with following features:
    • a. Remote Engine Disable/Enable – [output]
    • b. AC On/Off – [input]
    • c. Voice Call on Key-On – [input]
    • d. Buzzer on Illegal Motion – [output]
  • 2. For this setup, the GPS tracking unit needs 2-inputs and 2-outputs.

AutoGuard GPS Tracker Input/Output Available include:

Inputs/Outputs Available Option
Serial Interface: RS232
Digital Ignition Input: 1 Positive Input
Digital Ignition Input: 1 Positive Input
Digital Inputs: Up to 3 (Configurable)
Digital Outputs: 2 (Max. sink current 300mA)
Analog Inputs Up to 2 (Configurable) DC 0~40V (12bits resolution)
1-Wire® Interface: 1 (Driver ID, Temperature sensors)
LED Indicators: 3 LEDs (Power, GPS, Cellular)
Speaker Out: 1 (Mono)
Microphone: 1

Additionally, AutoGuard technical team has the in-house knowledge necessary to make device configuration changes based on client fleet needs. Often these tasks are outsourced to 3rd party companies, which can present a problem when it comes to troubleshooting issues. For the best priced devices contact AutoGuard.

Turn-Based-Reporting for Accurate Distance Calculation

AutoGuard provides turn-based reporting. If you want to track kilometers driven accurately, then you must install a vehicle tracking system that provides turn-based reporting. Turn-based enabled devices will send GPS messages every time the vehicle makes a turn. The minimum degrees it needs to turn to generate a GPS message is usually 60 degrees or more, but this can vary based on customer requirements, so be sure to ask your VTS vendor. Because the kilometers driven is generated by calculating the distance between two GPS locations, having the points from the turning event will lead to more accurate kilometer calculation. AutoGuard supplied devices are configured to generate turn-based reports, so you can be sure of the accuracy of the kilometer driven data.


The backend of the VTS is a collection of servers working 24/7 to process and store your GPS data. After the physical GPS tracker, this is the most important and prized possession for any vehicle tracking system provider. From the perspective of the vendor, they only have control over two things – the device and the software component. The other pieces like the satellite data or cellular network availability are usually beyond the control of the vendor. The management and development of the server components is imperative to a smoothly running VTS.

We at AutoGuard manage and maintain our servers to the highest industry standards so that Summit Communications Limited users can be assured that the data is safe, secured, and always available.

Key Details of our Infrastructure Setup

  • Servers are hosted in the cloud and we are the only personnel who have access to the data and software on the servers
  • AutoGuard internal IT team and ISP personnel are responsible for monitoring servers
  • AutoGuard servers are fully backed up with protocols in place to handle disaster recovery
  • AutoGuard inhouse technical team is responsible for supporting all backend system
  • All new features are developed and supported by inhouse technical team
The server is where the software resides. It is imperative that the server or servers are owned by the vendor as AutoGuard does because they have many moving parts and inhouse developers are necessary for troubleshooting and customization.

The server is where the software resides. For the best vehicle tracking service it is imperative that the server or servers are owned by the vendor as AutoGuard does because that allows inhouse developers the access necessary for troubleshooting and customization. The GPS tracking device must be of good quality as well, which we are providing as the best GPS tracker in Bangladesh.

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