Dynamic GPS tracking systems / 動態GPS跟踪系統
In today’s world, the majority of applications dealing with precision navigation
rely on the use of GPS, a system used for both civilian and military tasks.
However, when it comes to navigating densely-packed urban areas, indoor spaces
or places where satellite signals cannot protrude, GPS alone doesn’t do the
trick. The reason for this is that GPS is prone to errors due to the obstacles
that impair or block satellite reception. There are, of course, alternatives to
the GPS, such as the magnetometer or optical sensors, but each alternative comes
with its own lists of shortcomings.
The magnetometer, for example, requires unobstructed access to our planet’s
magnetic field and various equipment in industrial environments interferes with
it, hindering the reliability of a magnetometer. As for optical sensors, they
can be less reliable when faced with line-of-sight obstructions.
The MEMS accelerometer
MEMS accelerometers allow mobile
platforms to measure parameters that are related to their movement and position
in the real world, these measurements being known as ‘inertial measurements’. As
such, inertial navigation systems (INS) are used to complement radio-navigation
and GPS tools in areas where the latter are less reliable and improve their
accuracy under normal circumstances. By integrating the acceleration data
collected by the MEMS sensors, a GPS tracking system can calculate the position
and moving pattern of the mobile platform with increased precision.
The Colibrys solution
Our MS9000 accelerometer are the ideal choice for navigational applications,
given that they are GPS accelerometers developed for precision inertial systems
for land, sea and air uses. The MS9000 is a single-axis analog accelerometer
based on bulk micro-machined silicon elements and it features high bias
stability over temperature in harsh environments, ensuring long-term stability.
With a dynamic range of ±2g to ±10g, MS9000 accelerometer are part of the
exclusive group of MEMS used in EASA, FAA and DAL A certified systems.