At current model grid resolutions (x ~ 1 km) the background covariance is too smooth and too coarse to use effectively even conventional radar observations. Therefore some form of superobbing must be applied prior to use in the assimilation system. It is hypothesized that for rapid-scan data...
It has a collection of high quality laser beat frequency signals, signal processing computing speed advantages. 它可广泛应用于超精密测量,检测,加工设备,激光雷达系统. It can be widely used in ultra-precision measurement, testing, processing equipment, laser radar systems. 展开 ...
The presented work shows that additional data can be gathered when using normal Test Range Doppler radar systems other than just radial velocity history. Useful estimates of the Initial Yaw Rate together with yaw-squared drag and overturning moment coefficients can also be obtained by signal ...
The reflection of the signal caused by objects around the radar can reduce the desired signal quality. However, vital-sign detection measurements that are carried out have a short distance. This is because the input power generated by these components is very limited. Conventional radar systems ...
Doppler wind lidar (DWL); tail Doppler radar (TDR); data assimilation; hurricanes; numerical weather prediction Graphical Abstract1. Introduction Along with rapid coastal development and population growth, the United States has become more vulnerable to the impact of hurricanes than at any time in ...
A comparison study between Doppler weather radar (DWR) derived rainfall data and the conventional rain gauge data was carried out with hourly inputs at one of the watersheds of Chennai basin, Tamil Nadu, India using HEC-HMS model. The model calibration and validation were performed by comparing...
The potential of microwave Doppler radar in non-contact vital sign detection is significant; however, prevailing radar-based heart rate (HR) and heart rate variability (HRV) monitoring technologies often necessitate data lengths surpassing 10 s, leading
Recently, it was successfully applied to the tracking of a maneuvering aerial target given the radar observations [37] and the navigation of the Automated Underwater Vehicle (AUV) [38]. The idea of the CMNF algorithm is quite transparent. We fix the structure of the filter in the two-step...
As a result, DC offset can saturate and desensitize the receiver in conventional CW radar system, and this is a critical issue [56]. 4.2. Phase-Nulling or Null-Point In a Doppler radar system, the most important limitation in measuring periodic motions such as respiratory and heart rates, ...
The potential of microwave Doppler radar in non-contact vital sign detection is significant; however, prevailing radar-based heart rate (HR) and heart rate variability (HRV) monitoring technologies often necessitate data lengths surpassing 10 s, leading to increased detection latency and inaccurate HRV...