Titlebook: China Satellite Navigation Conference (CSNC) 2014 Proceedings: Volume II; Jiadong Sun,Wenhai Jiao,Mingquan Lu Conference proceedings 2014

慢跑鞋

The Research of the High-Altitude BDS Weak Signal Acquisitionthis paper achieves the receiving power and Doppler-shift of the High-Earth orbit receiver by simulating the navigation signal characteristic which based on the STK (Satellite Tool Kit). In order to solve the problem of the secondary code witch modulated on BDS B1I and improve the acquisition sensib

Confess

GNSS Message Structure Optimizationce such as the time to first fix. Considering the message reading point as a random variable and creating ephemeris acquisition time as a function of the reading time, we integrated the acquisition time of the ephemeris in GPS L2C CNAV random data block and L1C CNAV2 stationary message structure by

過(guò)份艷麗

防水

indifferent

Navigation Signal Acquisition Method Based on Multiple DBZP Fusiongnals with equal spreading code and bit periods, resulting in a potential bit sign transition in each primary code period of the received signal segments. The double block zero padding (DBZP) method and its improved versions overcome the correlation peak loss caused by bit sign transitions, but 50?%

Polydipsia

遺傳

Sputum

A Proposed Selection and Allocation of Spread-Spectrum Code for Compass B1C Signalileo. As an important step in B1C signal design, the design of spread-spectrum (SS) code involves construction, selection and allocation of the codes. Based on an analysis of the L1-band pseudo-code characteristics of GPS and Galileo, the researcher optimally selected 100 SS codes from the optimal c

一回合

The Performance of Interferometric Ranging Systems with Hopping Frequencies in Benign Environment anems. This paper explores the performance of IRHF systems in benign environments and under partial-band jamming (PBJ) conditions. The outlier probability is used to evaluate the ranging accuracy of IRHF systems. Employing an approximation tool called the Union Bound (UB), we derive a formula of the o

cochlea

Optimized Asymmetric Dual-Frequency Constant Envelope Multiplexing Techniquerequency constant envelope multiplexing is one of the hottest issues and has been attracted great attention from researchers and system builders. ACE-BOC is a recently proposed technique, which allows the multiplexing of four or less arbitrary signals into a composite signal with constant envelope.