6results about How to "Improve ranging ability" patented technology

The application is suitable for the field of radar technology, and provides a radar control method and device, a terminal equipment and a computer readable storage medium, which comprises: obtaining a transmission strategy of a current transmission block according to a current measurement scene; and a laser radar controls the current transmission block to transmit a laser detection signal according to the transmission strategy, so that the laser detection signal transmitted by the current transmission block can meet the requirements of the current measurement scene by adjusting the transmission times of the laser detection signal transmitted by the current transmission block and the transmission power of the laser detection signal transmitted each time, and the laser radar can meet the ranging performance, ranging accuracy, high reverse expansion and other performance requirements of multiple different measurement scenes, and the measurement performance of the laser radar is improved.

This application provides a parameter optimization method for a light-receiving path system, a light-receiving path system, and a lidar. The parameter optimization method includes: determining power characteristic parameters to represent the detection capability of the light-receiving path system; determining the size parameters of a via based on the power characteristic parameters, according to a preset spatial distribution of the light source and the transmit / receive area constraints of the light-receiving path system; determining the geometry of the via based on preset stray light suppression conditions; determining whether to install a first extinction sleeve at the via; and, given that a first extinction sleeve is installed at the via, determining whether to install a second extinction sleeve at a rotating reflector. This application, by determining the power characteristic parameters and combining them with the spatial distribution of the light source and the transmit / receive area constraints, accurately calculates the optimal size of the via; by combining the stray light suppression conditions, it derives the geometry of the via and decides whether to install the first and second extinction sleeves, thereby improving the efficiency of the light-receiving path and enabling the lidar to achieve greater ranging capability.

The application relates to an assembly method of a laser radar and the laser radar; the assembly method comprises the following steps: acquiring multiple filters, the combination of the wavelength ranges allowed to pass through the multiple filters covering an emission wavelength range; detecting an actual emission wavelength of the outgoing laser; and selecting a filter with a central wavelength matched with the actual emission wavelength from the multiple filters and assembling the filter at a preset position of a receiving module; the laser radar assembly method and the laser radar provided by the application can divide the emission wavelength range of an emission module into multiple small wavelength intervals through multiple filters, thereby reducing the bandwidth of the filters used, reducing the introduction of stray light and background light, and improving the ranging performance of the laser radar.

The application provides a laser ranging method and system based on boundary positioning, the method comprising: providing a first emitted laser beam, the first emitted laser beam being directed to a position close to a target boundary; calculating a detection distance of the first emitted laser beam at the target boundary position by adjusting horizontal movement of the first emitted laser beam at the target boundary position; generating boundary positioning information when the detection distance of the first emitted laser beam at the target boundary position changes suddenly; after the boundary positioning information is generated, further providing a second emitted laser beam on the same laser range finder and directing the second emitted laser beam to a target detection position; and calculating a straight-line distance between a current emission point and the target detection position according to the second emitted laser beam.

The application provides a multi-echo signal processing method, device and equipment and a storage medium. The multi-echo signal processing method comprises: obtaining a plurality of echo signals in a preset time period, and then obtaining a first echo signal, a last echo signal, a strongest echo signal and a second strongest echo signal in the plurality of echo signals. Finally, the first echo signal and the second echo signal used for target object ranging are determined from the first echo signal, the last echo signal, the strongest echo signal and the second strongest echo signal. In the application, more accurate and diversified initial data is provided for the subsequent ranging data generation process, and the performance of the laser radar ranging is improved.

The embodiment of the application discloses an optical-mechanical system, which comprises a light emitting assembly, a light receiving assembly and a light scanning assembly. The light scanning assembly comprises a first light scanning element and a second light scanning element. The emitted light signal is transmitted by the first light scanning element and the second light scanning element in sequence and then emitted to a target object. Along a first straight line direction, the second light scanning element is located between the first light scanning element and the light emitting assembly. And / or, the echo light signal is transmitted by the second light scanning element and the first light scanning element in sequence and then reaches the light receiving assembly. Along the first straight line direction, the second light scanning element is located between the first light scanning element and the light receiving assembly. The optical-mechanical system can make the emission position of the emitted light signal and / or the incidence position of the echo light signal be located in the middle of the optical-mechanical system, which is beneficial to realize the calibration of the optical-mechanical system and the symmetry of the close-range point cloud.