Besides, the whole stability of the ball buddy is increased since that the lower surface of the added direction indicator enlarges the contact surface with ground.
此外，由于增设的方向指示器下平面扩大了与地面的接触，提高了球托的整体稳定性。
2
Ground moving target indicator (GMTI) using space based sparse array is attractive.
天基稀疏阵实现地面运动目标指示具有很大吸引力。
3
The result was confirmed by GLD (Ground Loop Design) Software, it indicated that the transfer indicator can be used in practical applications and made the design more convenient.