A new velocimeter for measurements in microscopic regions is presented. A common charge coupled device (CCD) has been used as spatial filter for one-component velocity measurements. The characteristics of this sensor are investigated and first application results presented.

The currently advocated pre-manipulative risk assessment protocols include the use of provocative positional tests to challenge the integrity of the vascular supply to the brain. This paper examines the validity of these pre-manipulative provocative tests in light of recent studies involving ultrasound scanning of the vertebral arteries in subjects who also had provocative tests performed. Thes...

The autonomous navigation technology of INS has always attracted the attention many scholars. In satellite-denied environment, making full use auxiliary sensors with characteristics can suppress dynamic error generated by in effectively. However, like an odometer (OD) and laser doppler velocimeter (LDV) will cause instability to system. To solve above problems, we propose improved inerital-base...