FPGA GNSS NAVIGATION DEVICE AND METHOD FOR PERFORMING GNSS CALIBRATION BASED ON FPGA

A navigation device for performing GNSS calibration based on an FPGA comprises: a satellite navigation receiver transmitting GNSS data including GNSS reference location information and a GNSS synchronization signal indicating a GNSS-based location calculation reference point; an inertial measurement...

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Bibliographische Detailangaben
Hauptverfasser:	HONG EON PYO, JOO JHI HOON, LEE SEOK JUN, CHOI KANG A
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	A navigation device for performing GNSS calibration based on an FPGA comprises: a satellite navigation receiver transmitting GNSS data including GNSS reference location information and a GNSS synchronization signal indicating a GNSS-based location calculation reference point; an inertial measurement device periodically transmitting IMU data including sensor data on acceleration and angular acceleration; and a navigation control unit calculating a pure navigation method for obtaining the inertial measurement device-based location information by using the IMU data, and performing a calibration navigation method for removing errors in the pure navigation method. The navigation control unit sequentially and individually operates a plurality of timers configured as hardware whenever the IMU data is received, thereby obtaining reference time difference information for the calibration navigation method. Therefore, the precision of the calibration navigation method can be improved. FPGA 기반의 GNSS 보정을 수행하는 항법 장치는 GNSS 기준 위치정보를 포함하는 GNSS 데이터 및 GNSS 기반 위치계산 기준시점을 나타내는 GNSS 동기신호를 전달하는 위성항법 수신기, 가속도 및 각가속도의 센서 데이터를 포함하는 IMU 데이터를 주기적으로 전달하는 관성측정기, 및 상기 IMU 데이터를 이용하여 관성측정기 기준 위치정보를 획득하는 순수항법을 계산하고, 상기 순수항법의 오차를 제거하는 보정항법을 수행하는 항법제어부를 포함하고, 상기 항법제어부는 하드웨어적으로 구성된 복수의 타이머를 상기 IMU 데이터가 수신될 때마다 순서대로 하나씩 동작시켜 상기 보정항법을 위한 기준시간차 정보를 획득한다.