doppler造句
151. Then, we proposed a maximum Doppler spread (MDS) estimation algorithm for OFDM systems with the comb-type pilot pattern in doubly selective fading channels (DSFC).
152. The main obstacles for the passive tracking system are the Doppler and multipath effect. The Doppler compensation is necessary for the high speed target tracking.
153. DV Doppler waveform of this dextrocardia fetus showed a nearly ab- sent atrial systole wave.
154. A Doppler compensation method for bi-phase-coded signal based on Moving Target Detection (MTD) is presented to resolve the Doppler sensitive trait.
155. Purpose:To study deep venous valvular incompetence of lower extremity by using high-frequency ultrasonography and color doppler.
156. Based on the definition of the average ambiguity function, the numerical expression of the average ambiguity function for the RPPM pulse doppler radar signal is derived in this dissertation.
157. Objective Discussion tyroma (armor lump) colored Doppler supersonic (CDFI) acoustic image characteristic.
158. Objective : To assess the usage of color doppler monitoring method in the centesis of kidney cysts.Sentence dictionary
159. Results Neck tumors such as carotid body tumor, neurilemmoma, swelling lymph, nodehemangioma and lipoma had various color doppler sonography image characteristics.
160. AIM: To explore the value of Doppler tissue imaging in assessing the left ventricular diastolic function of normotensive offspring of hypertensive parents.
161. The Doppler redshift and the cosmological redshift are governed by two distinct formulas.
162. Adopting direct array manifold in a uniform circular array (UCA), the estimation of Doppler frequency can be obtained by DOA matrix.
163. The inaccurate Doppler centroid estimation can evidently degrade the quality of SAS image.
164. The pulsation in the original data of Doppler velocity has to be removed before the retrieval.
165. Pulsed Doppler spectra showed image of smooth continuous bands in the honeycomb or snaky black areas.
166. The model of multi-ship ISAR imaging driven by ocean wave is given, and the Doppler distributing is analyzed, then the complexity of projection plane and cross range resolution is illuminated.
167. With arbitrary postures of the aircraft and the antenna, the coherent clutter model for airborne Doppler radar is studied in this paper.
168. The internal carotid artery is the most proper cerebral artery for clinical assessment of cerebral autoregulation by Doppler sonography.
169. Materials and Methods: Color doppler characteristics in 10 patients with carotid body tumor were analysed retrospectively.
170. Objective: This study aimed at the color Doppler ultrasound assessment in mesenteric lymphadenitis in pediatrics.
171. A new method of built in self testing for pulse doppler radar digital signal processor was advanced.
172. Under the discussion of IP decorrelation, a thorough analysis is conducted of generating mechanisms of baseline decorrelation and Doppler decorrelation and their effects on IP.
173. Objective To explore the diagnostic value of color Doppler in suprarenal tumor.
174. Laser Doppler Anemometry(LDA) is a non-contact optical method for measuring flow velocity.
175. By means of user-defined m files in MATLAB modeling typical flat fading channel such as rician fading channel and rayleigh fading channel are derived, comprising with and without doppler shift.
176. In this paper, the laser doppler method to measure the turbulence velocity of the jet propeller has been researched.
177. Method: Copper needle was placed into the tumor tissue under the guide of colored Doppler ultrasonic angiograph with a probe of 70MHZ.
178. In the communication of multiplex system, the DS signal exists Doppler frequency shift for the high dynamic situation of aerocraft.
179. The main reasons of bit - error - rate in underwater acoustic communication are serious multipath fading and Doppler shift.
180. Codes used in phase coded pulse compression waveforms suffer from Doppler mismatch.
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