a r t i c l e i n f o a b s t r a c t Keywords: Earth-centered earth-fixed (ECEF) coordinate system Converted measurement Kalman filter (CMKF) Posterior Cramer–Rao lower bound (PCRLB) Sequential filter Doppler Correlation coefficient For an airborne Doppler radar, the carrying platform is moving and has time-varying attitudes. The filtering algorithms applicable to local coordinate system are n...

Existing precision displacement-measuring devices are primarily based on linear encoders (optical or magnetic) or laser interferometers. Most encoders use grating scales and frequency counters, while most interferometers use stabilized lasers and fringe counters. In general, interferometers are more expensive and more accurate than linear encoders. However, there are large gaps in price and per...

Car-to-car and car-to-infrastructure (henceforth called C2X) communications are constantly gaining importance for roadsafety and other applications. In order to design efficient C2X systems, an understanding of realistic C2X propagation channels is required, but currently, only few measurements have been published. This paper presents a description of an extensive measurement campaign recently ...

The topic of Doppler and Bearing Tracking (DBT) problem is to achieve a target trajectory using the Doppler and Bearing measurements. The difficulty of DBT problem comes from the nonlinearity terms exposed in the measurement equations. Several techniques were studied to deal with this topic, such as the unscented Kalman filter. Nevertheless, the performance of the filter depends directly on the...

Recently, in the field of ITS (Intelligent Transportation System), accurate and precise position of a vehicle in the street is more demanding. They want to know which lane a car is driving in. The GNSS RTK could provide this accuracy. But, in urban street, due to its environment, the conventional code and carrier based RTK can’t be a practical solution. The Doppler measurement from GNSS receive...

  Measurement of blood flow and the effects of different factors on tissue blood flow are important fields of research in physiology and pharmacology. So far, different methods have been innovated, using laser light is the Last one. In this article history, principles and specifications of laser technique along with its advantages and disadvantages ( in comparison with other methods) are revie...