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Acquisition sensitivity” refers to the minimum signal level at which the
device is able to successfully perform a cold start TTFF. The acquisition
sensitivity test is a simulated signal test.

Assisted GPS (A-GPS)” is a system allowing satellite receivers to obtain
information from communication network resources to assist in acquiring
satellite location. A-GPS system is especially useful when the receiver is in
a location where it is difficult for the satellite signals to penetrate. In
addition to providing better coverage, A-GPS also improves the start-up
time, which is the time required by the satellites and the receivers to
establish a reliable connection.

Circular Error Probability (CEP)” is defined as the radius of a circle
centered on the true value that contains 50% of the actual GPS
measurements. So a receiver with 5 meter CEP accuracy will be within 5
meter of the true measurement 50% of the time. The other 50% of the time
the measurement will be in error by more than one meter.

Dilution of Precision (DOP)” is the degree of proximity of the location
data to their mean value. The relative position of satellites affects the
accuracy of location calculation by the locating module. Location
coordinates computed when the satellites are clustered together suffer from
dilution of precision (DOP), a factor that multiplies the associated errors.
The DOP for an ideal satellites constellation arrangement equals close to 1,
which does not magnify the underlying errors.

Distance Root Mean Square (DRMS also called RMS, 1Sigma)”
This is computed as square root of the average of the squared horizontal
position errors with 65% probability. The position expressed has the
probability of being within a circle with radius with 65% probability. A
locating module with 6 metre DRMS accuracy would be within 6 meters of
its actual position 65% of the time.

Emergency Button”A button provided in vehicle for passengers or crew
members to send specialized data packet /SMS to Centralized regulatory
server to indicate safety/panic situation caused by human or natural
disaster or vehicle accident etc.

Global Positioning System (GPS)” is a space-based radio navigation
system. It provides positioning, navigation, and timing services to military
and civilian users on a continuous basis.

Sensitivity “refers to the minimum signal strength level at which locating
module can successfully perform a location fix. A GNSS locating module
has two different sensitivity levels – acquisition sensitivity and tracking
sensitivity.

Time to First Fix (TTFF)” describes the time required for a tracking
device to acquire adequate satellite signals and related data (almanac and
ephemeris data) to compute location.

Tracking Sensitivity” refers to the minimum signal level at which the
device is able to successfully maintain the location fix. The acquisition
sensitivity test is a simulated signal test.

Vehicle Location Tracking (VLT)”device uses satellite based location
technology to determine and record the precise location of a vehicle at
regular intervals. The location data so determined can be stored within the
device, and/or can be transmitted to the Backend Control Centre using a
wireless communication modem built in the device.