Table 4.

The parameters of FMCW Lidar in this section.

Reference	Detection Range	Accuracy	FoV (Degree)	New Finding (s)	Wavelength (nm)
[63]	2 m	20 mm	20	the first coherent Lidar with a silicon chip using OPA	1550
[64]	60 m	-	70	the scanning is accomplished by using collimation lenses	-
[65]	3 m	-	24 × 20	propose a new method for laser frequency sweep linearization	1550
[66]	205.595 mm	$50 \mathsf{\mu }\mathrm{m}$	-	a dual-path system with a simple structure and good nonlinear eliminate effect	1515–1565
[67]	1.8 m	0.5 mm	1.9 × 7.7	use the virtually imaged phased array to realize 2D beam steering	1500–1600
[68]	80 m	-	1.05	the scanning points and steering angle can be easily extended	1550
[69]	3–5 m	-	40 × 8.8	realize the point cloud image with 4928 pixels by slow-light gratings	1550
[70]	GEN-1 28 m GEN-2 75 m	GEN-1 28 cm GEN-2 16.7 cm	-	the first single chip-scale(include laser source) integrated FMCW Lidar	-
[30]	10 m	20.86 cm	-	realize the 3D-mapping of distance vibration frequency and vibration velocity	1467–1617