Range accuracy and resolution for laser radars

Steinvall, Ove; Chevalier, Tomas

doi:10.1117/12.630622

Cited by 31 publications

(21 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We can also conclude that it would be valuable if the range resolution could be improved for example using TCSPC techniques [25]. The simple peak finding algorithm will also give larger range errors a compared with other techniques such as constant fraction detection, Gauss fitting, correlation and others [26].…”

Section: Discussion and Concluding Remarksmentioning

confidence: 97%

Simulating the performance of laser imaging and range profiling of small surface vessels

2013

Self Cite

View full text Add to dashboard Cite

The detection and classification of small surface targets at long ranges is a growing need for naval security. This paper will discuss simulations of a laser radar at 1.5 µm aimed for search, detect and recognition of small maritime targets. The data for the laser radar system will be based on present and realistic future technology.The simulations will incorporate typical target movements at different sea states, vessel courses, effects of the atmosphere and for given laser system parameters also include different beam jitter. The laser pulse energy, repetition rate as well as the receiver and detector parameters have not been changed during the simulations.A discussion of the classification potential based on information in 1D, 2D and 3D data separately and in combination will be made vs. different environmental conditions and system parameters. System issues when combining the laser radar with IR/TV and a range-Doppler radar will also be commented.

show abstract

Section: Discussion and Concluding Remarksmentioning

confidence: 97%

Simulating the performance of laser imaging and range profiling of small surface vessels

2013

Self Cite

View full text Add to dashboard Cite

show abstract

“…When the emitted laser pulse is modeled as a Q-switched pulse, the primary electron distribution with a normalized pulse shape is [12] …”

Section: Research Articlementioning

confidence: 99%

Improved cumulative probabilities and range accuracy of a pulsed Geiger-mode avalanche photodiode laser ranging system with turbulence effects

et al. 2017

View full text Add to dashboard Cite

There exists a performance limitation in a pulsed Geiger-mode avalanche photodiode laser ranging system because of the echo intensity random fluctuation caused by turbulence effects. To suppress the influence of turbulence effects, we present a cumulative pulse detection technique with the ability to achieve improved cumulative probabilities and range accuracy. Based on the modulated Poisson model, the cumulative probabilities, range accuracy, and their influencing factors are investigated for a cumulative Q-switched laser pulse train. The results show that the improved cumulative probabilities and range accuracy can be obtained by utilizing cumulative pulse detection, with the condition that the echo intensity is 10, the echo pulse width is 10 ns, and the turbulence degree is 3, the target detection probability increases by 0.4, the false alarm probability decreases by 0.08, and the accuracy and precision increase by 46 cm and 27 cm, respectively.

show abstract

“…For the plane (16), the tilt angle φ x (φ y = 0) will vary, for the cone (17) we vary the half-cone angle and for the paraboloid (19) we vary the coefficient k. For the sphere (18) we vary the relation between the beam radius r and the object radius r T , defined as…”

Section: Range Error Properties For Various Shapesmentioning

confidence: 99%

“…The uncertainties in laser radar ranging and the effects on object recognition are discussed in [6,17,18,19]. In [18,19] the accuracy and resolution of range data for a full waveform detector are analyzed.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of laser radar sensor parameters on range-measurement and shape-fitting uncertainties

et al. 2007

Self Cite

View full text Add to dashboard Cite

In object reconstruction and recognition based on laser radar data, the range value's accuracy is important. The range data accuracy depends on the accuracy in the laser radar's detector, especially the algorithm used for time-of-flight estimation. In this paper, we model a general direct-detection laser radar system applicable for hard target measurements. We derive the time and range dependent laser radar cross sections for some simple geometric shapes (plane, cone, sphere, and parabola). The cross section models are used, in simulations, to find the proper statistical distribution of uncertainties in time-of-flight range estimations. Three time-of-flight estimation algorithms are analyzed; peak detection, constant fraction detection and matched filter. The detection performance for various shape conditions and signal-to-noise ratios are analyzed. Two simple shape reconstruction examples are shown, and the detector's performances are compared with the Cramér-Rao lower bound. The performance of the peak detection and the constant fraction detection is more dependent on the shape and noise level, compared to the matched filter. For line fitting the matched filter perform close to the Cramér-Rao lower bound.

show abstract

Range accuracy and resolution for laser radars

Cited by 31 publications

References 8 publications

Simulating the performance of laser imaging and range profiling of small surface vessels

Simulating the performance of laser imaging and range profiling of small surface vessels

Improved cumulative probabilities and range accuracy of a pulsed Geiger-mode avalanche photodiode laser ranging system with turbulence effects

Influence of laser radar sensor parameters on range-measurement and shape-fitting uncertainties

Contact Info

Product

Resources

About