標準5G波形を用いた車載ダイレクト低軌道衛星通信の実現
車載テレマティクスプロセッサ内で最大±48kHzに達する激しいドップラーシフトと20ms以上の伝搬遅延を補正し、5G HARQタイミング破綻を防止。
Pre-Doppler Frequency Compensation
By tracking satellite ephemeris orbits in software, the vehicle shifts its uplink transmit frequency dynamically, landing signals perfectly centered in the satellite's receiver filter.
- Supports standard S-band and Ka/Ku-band NTN satellite connectivity.
- Doppler frequency shift compensation up to ±50 kHz at 2 GHz.
- Differential propagation delay estimation resolving up to 25 milliseconds.
- Seamless integration with Starlink, Kuiper, and OneWeb constellations.
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