Optoelectric control apparatus for satellite laser ranging system

摘要

An optoelectric control apparatus for a satellite laser ranging system comprises a communication controller for externally receiving optoelectric control data. Memory is connected to the communication controller and stores a round trip distance to a satellite. A laser generation control unit is connected to the communication controller and outputs a laser fire signal. A signal measurement unit receives a laser start time. A real-time conversion unit is connected to the signal measurement unit and the communication controller, and converts a predicted laser arrival time into real time. A Lagrange interpolation processor is connected to the real-time conversion unit and the memory, and calculates a time at which laser light fired by a laser transmission unit returns back to a laser reception unit (laser arrival time). The clock unit is connected to a time measurement unit, the real-time conversion unit, a register unit, and a delay unit, and outputs time information.

主权项

1. An optoelectric control apparatus for a satellite laser ranging system, comprising:
a communication controller for externally receiving optoelectric control data; memory connected to the communication controller and configured to store a round trip distance to a satellite; a laser generation control unit connected to the communication controller and configured to output a laser fire signal; a signal measurement unit configured to receive a laser start time; a real-time conversion unit connected to the signal measurement unit and the communication controller, and configured to convert a predicted laser arrival time into a real time using a value input from the signal measurement unit and a time applied by a clock unit; a Lagrange interpolation processor connected to the real-time conversion unit and the memory, and configured to calculate a time at which laser light fired by a laser transmission unit returns back to a laser reception unit, that is, the laser arrival time, by using an accurate laser start time input from the real-time conversion unit and a round trip time to an object desired to be measured, the round trip time being stored in the memory; and the clock unit connected to a time measurement unit, the real-time conversion unit, a register unit, and a delay unit, and configured to output time information, and wherein the Lagrange interpolation processor comprises:
a Lagrange interpolation controller for receiving an operation signal required for operation of the Lagrange interpolation processor and generating a control signal required for the Lagrange interpolation processor;a 64-bit adder/subtractor for performing addition/subtraction on pieces of 64-bit integer data;a 64-bit multiplier for performing a multiplication on two pieces of 64-bit integer data and outputting a 128-bit resulting value;a 128-bit divider for performing a division on pieces of 128-bit integer data; anda variable binary selector for selection respective operation results of the 64-bit adder/subtractor and the 64-bit multiplier using a variable binary selection method.