Noncontact detection utilize the phase modification of the detection echo to analysis micro-Doppler information in order to realize target detection and parameters estimation, which is widely used in rescue service, antiterrorists enforcements, and remote medicine, etc.

Multiple target distinguishing technique based on Doppler spectrum;

Then ,with the introduction of the conceptions of lowpass-spectrum width and bandpass-spectrum width,Doppler spectrum features are in- vestigated for three typical micro-motion targets.

According to Barrick s forst-order and second-order sea echo radar cross section equations of HF radar,combined with ocean wave spectrum and the equal-frequence contour line,the narrow-beam sea echo doppler spectrum was simulated.

Study on the electromagnetic scattering and Doppler spectra from two-scale time-varying fractal rough sea surface;

Based on the 2-D ocean-like surface of linear model and the first-order small slope approximation,the characteristic of Doppler shift for different order Doppler spectra of scattered echoes is investigated and the formula of Doppler shift is derived.

Respiratory frequency inspecting system of ultrasonic Doppler;

The Research of the Blood Stream Dynamics by Transcortical Doppler for Migraine Diapause

After the rats were induced diabetes with stroptozotocin, the circulatory parameters of the central retinal artery ( CRA ) were measured using color Doppler imaging, including peak systolic velocity ( PSV) , end diastolic velocity ( EDV) , mean velocity (MV) , resistive index (RI) , and pulsitive index (PI).

Research and analysis of micro-Doppler based on precession of ballistic missile;

Research on precession of ballistic missile warhead based on micro-Doppler analysis;

Research on the influence of velocity on micro-Doppler and its compensation;

Methods Color Doppler flow image(CDFI) combined with pulsed wave Doppler(PW) was used to define the course of vertebral artery and determine the parameters of blood flow for comparative study between two groups: patient group(30 patients with stenotic vertebral artery's inner diameter <2.