Parameter Measurement of LFM Signal With FRI Sampling and Nuclear Norm Denoising

Wei, Zhiliang; Fu, Ning; Jiang, Siyi; Li, Xiaodong; Qiao, Liyan

doi:10.1109/tim.2022.3158986

Cited by 15 publications

(2 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Assume that the sampling rate is 16.25 MHz, the frequency change range is linear from 0.05 MHz to 0.1 MHz, and the frequency change rate is 0.16 GHz/s. One cycle of the sweepingfrequency interference time-domain waveform is shown in Figure 4, and it can be seen that the frequency changes linearly [35].…”

Section: Mathematical Model Of Sweepingfrequency Interferencementioning

confidence: 99%

Influence of sweep interference on satellite navigation time-domain anti-jamming

Qiao

et al. 2023

Front. Phys.

View full text Add to dashboard Cite

The global navigation satellite system (GNSS), represented by global positioning systems (GPS), is widely used in various civil and military fields and represents an essential basis for space-time information services. However, the radar signals partially overlap with the frequency band of satellite navigation signals, seriously affecting the normal reception of weak satellite navigation signal power. To further improve anti-jamming with sweep interference in the time domain, this paper focuses on the sweep interference scenario, studies the influence of the sweep interference on time-domain-adaptive anti-jamming, and proposes a timing reset based on the adaptive filter. The proposed method can effectively deal with the influence of sweep interference on time-domain-adaptive anti-jamming and can suppress interference and protect signals at the same time. Simulation experiments verify the effectiveness of the anti-jamming method proposed in this paper. Under the typical simulation scenarios, the influence time of the frequency sweep interference on the navigation signal is less than 1 m when the timing reset period is 1 m, which is significantly reduced compared to traditional methods. The proposed anti-jamming method is of great significance for improving the survivability of satellite navigation receivers in sweep interference scenarios.

show abstract

Section: Mathematical Model Of Sweepingfrequency Interferencementioning

confidence: 99%

Influence of sweep interference on satellite navigation time-domain anti-jamming

Qiao

et al. 2023

Front. Phys.

View full text Add to dashboard Cite

show abstract

“…The s ( t ) in Figure 1 is the real‐valued part of the LFM signal [7, 8]. s ( t ) passes through channel 1 and channel 2, respectively, where the signal undergoes a delay operation in channel 1, and in channel 2, it first undergoes Hilbert filtering and then a delay operation to synthesize the output of channel 1 and channel 2 into the sampling system for sampling.…”

Section: Introductionmentioning

confidence: 99%

A parameter estimation method with improved finite rate of innovation sampling for linear frequency modulation signals

Meng¹,

Meng²,

Wang³

2023

Electronics Letters

View full text Add to dashboard Cite

To complete the sparse sampling of linear frequency modulation (LFM) signals and estimate the parameters, the authors proposed an improved finite rate of innovation (FRI) system to achieve the goal. First the authors build a mathematical model based on the Z‐transform, then they input the LFM signal into the modified FRI system and process the output of the system based on this mathematical model, which enables the estimation of the parameters of the LFM signal using only four sampling points. The error of the final experimental results can be controlled within 3%, which greatly improves the efficiency of LFM signal parameter estimation.

show abstract

Sub-Nyquist sampling and parameter measurement of LFM-BPSK hybrid modulated signal

Huang,

Xiang,

Deng

et al. 2024

Digital Signal Processing

View full text Add to dashboard Cite

Parameter Measurement of LFM Signal With FRI Sampling and Nuclear Norm Denoising

Cited by 15 publications

References 45 publications

Influence of sweep interference on satellite navigation time-domain anti-jamming

Influence of sweep interference on satellite navigation time-domain anti-jamming

A parameter estimation method with improved finite rate of innovation sampling for linear frequency modulation signals

Sub-Nyquist sampling and parameter measurement of LFM-BPSK hybrid modulated signal

Contact Info

Product

Resources

About