Entity

Time filter

Source Type

Livermore, CA, United States

Patent
Topcon Positioning Systems | Date: 2014-10-30

Navigation satellite receivers have a large number of channels, where phase discriminators and loop filter of a PLL operate in phase with data bits and control of numerically controlled oscillator (NCO) carried out simultaneously on all channels. Since symbol boundaries for different satellites do not match, there is a variable time delay between the generation of control signals and NCO control time. This delay may be measured by counting a number of samples in the delay interval. A proposed system measures non-energy parameters of the BPSK-signal carrier received in additive mixture with noise when a digital loop filter of PLL controls NCO with a constant or changing in time delay. A control unit controls bandwidth and a LF order by changing transfer coefficients based on analyzing estimated signal parameters and phase tracking error at a PD output.


Patent
Topcon Positioning Systems | Date: 2016-01-12

A digital filter for narrowband interference rejection, including modules of narrowband interference rejection connected in series, each of which includes the following elements connected in series: a block of successive vector rotation based on the CORDIC vector rotation algorithm for integers, a block of reduction of the length of the rotated vector to maintain the same number of bits for digital signal representation, a block of high-pass filters for orthogonal components of the reduced vector in order to remove the interference from zero frequency region. The filter can be implemented without multiplication.


Patent
Topcon Positioning Systems | Date: 2015-06-23

A system and method for scheduling tasks of a construction project includes dividing a plan for a construction project into a plurality of tasks. Each particular task of the plurality of tasks is defined by one or more parameters. The one or more parameters of each particular task are modified based on an operational model defining a sequence of actions for performing the particular task. A construction machine is assigned to each particular task based on the modified one or more parameters of the particular task. Each particular task is dispatched to the construction machine assigned to the particular task for presenting the sequence of actions for performing the particular task.


A system and method for providing guidance to a user of a construction machine include computing kinematic behavior of a construction machine based on data received from the construction machine while performing a task. The kinematic behavior is compared with a model for operating the construction machine for performing the task. Feedback data is sent to the construction machine based on the comparing to provide guidance to the user of the construction machine for performing the task.


Patent
Topcon Positioning Systems | Date: 2015-06-23

Systems and methods for automating a task of a construction machine include receiving machine data from a first construction machine and a second construction machine. A load balance of the first construction machine is determined based on the received machine data. A location on the first construction machine to release a load is determined based on the load balance. A message is sent to the second construction machine to control movement for releasing a load of the second construction machine at the determined location on the first construction machine.

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