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Article
Open AccessScreening of the college students at clinical high risk for psychosis in China: a multicenter epidemiological study
To investigate a 3-stage screening procedure and explore the clinical features of subjects at Clinical High Risk (CHR) for psychosis in a representative sample of Chinese college students.
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Article
Whole-Region Hybrid Search Algorithm for DSSS Signal Acquisition
The conventional hybrid search algorithm for direct sequence spread spectrum (DSSS) signal acquisition terminates once a decision variable exceeds the detection threshold. Therefore, a spurious “hit” declared ...
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Article
High-dynamics pulse-shaped signal simulation based on polynomial-based interpolation filters
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Article
Performance Comparison of Code Discriminators in the Presence of CW Interference
This paper considers the effect of continuous wave interference (CWI) on code tracking loops for global navigation satellite system signal. Based on the integrate-dump model analysis, the overall correlation r...
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Article
CW interference mitigation in GNSS receiver based on frequency-locked loop
Global navigation satellite system (GNSS) receivers are highly susceptible to continuous wave (CW) interference because the received signals are extremely weak. Current interference mitigation techniques mainl...
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Article
A novel joint navigation state error discriminator based on iterative maximum likelihood estimation
To break through the limitations of traditional discriminators used in vector tracking loops, this paper presents an iterative maximum likelihood estimation (IMLE) method for extracting navigation state errors...
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Article
Acquisition algorithm assisted by AGC control voltage for DSSS signals
An appropriate acquisition configuration in terms of signal quality can optimize the acquisition performance. In view of this, a new approach of acquisition assisted by the control voltage of automatic gain co...
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Article
A modified code tracking loop based on dual structure
A modified code tracking loop for tracking the pseudo-random noise code in direct sequence spread spectrum signal is proposed. The modified loop differs from the typical through imposing a dual structure which...
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Article
A Novel Delay- and Utility-Oriented Resource Allocation Algorithm for Mixed Services in OFDMA Systems
In this paper, a novel “delay- and utility-oriented (DUO)” resource allocation algorithm for the mixture of real-time (RT) and non-real-time services in orthogonal frequency division multiple access systems is...
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Article
Computationally efficient 2-D DOA estimation for uniform rectangular arrays
A computationally efficient two-dimensional (2-D) direction-of-arrival (DOA) estimation method for uniform rectangular arrays is presented. A preprocessing transformation matrix is first introduced, which tran...
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Article
Multipath effects on vector tracking algorithm for GNSS signal
The vector tracking algorithm uses a single extended Kalman filter (EKF) to predict the time-delays and the Doppler deviations of the GNSS signal, while also estimating the user’s position, velocity, and clock...
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Article
High-speed maneuvering target detection approach based on joint RFT and keystone transform
Increasing the integration time is an effective method to improve small maneuvering target detection performance in radar applications. However, range migration and Doppler spread caused by maneuvering target ...
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Article
A tracking loop based on tightly coupled range and velocity filter equations
A joint range-velocity closed tracking loop, which is based on tightly coupled range and velocity filter is proposed. When the measured velocity value is adopted in the range tracking loop to modify the veloci...
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Chapter
Parallel Implementation of Motion Parameters Estimation Algorithm
The motion parameters estimation of the moving target is a key problem in radar signal process. Recently, in order to increase the accuracy of estimation parameters, the technology of modern signal process is ...
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Chapter and Conference Paper
The Analysis of Equivalent Power Flux-Density of COMPASS System in New RNSS Band
The 1164–1215 MHz has been allocated to Radionavigation satellite service (RNSS) on a primary. In accordance with the Radio Regulation (RR), the band 960–1215 MHz is also allocated on a primary basis to the ae...
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Chapter and Conference Paper
Satellite Pseudo-range Positioning Based on Time Series Analysis
A novel real-time positioning model for single frequency receiver is proposed. The position parameters are expressed in the form of linear time series combination, and the positioning problem is converted into...
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Article
Time-varying AR modeling and adaptive IIR notch filter for anti-jamming DSSS receiver
Using Time-Varying AR (TVAR) model and adaptive notch filter is a new method for the non-stationary jammer suppression in Direct Sequence Spread Spectrum (DSSS). The performance of TVAR model for Instantaneous...
