Abstract: A three-dimensional detection method for red tide algae based on holographic imaging is provided, including: constructing a coaxial optical path based on a structure of a Mach-Zehnder interferometer; determining reconstruction distances of the system under different object distances; constructing an original hologram database of the algae; selecting an original hologram, and two reconstructed holograms with different reconstruction distances as a three-dimensional spatial sample of the original hologram; labeling algae in sample, and recording species and bounding boxes of the algae; training a target detection network with the sample of the holograms and a label file; detecting, with the trained target detection neural network, the sample of the algae to obtain species and a quantity of plankton in imaged water. The disclosure further provides a three-dimensional detection device for red tide algae. The method can improve a detection speed and detection accuracy of the red tide algae.

Abstract: Methods, systems, and devices for wireless communications are disclosed by the present application. A request to establish a call using a first connection may be received, the first connection using a first radio access technology to communicate with a radio access network. During execution of a procedure to establish the call, a command to handover communications from the first connection to a second connection that uses a second radio access technology to communicate with the radio access network may be received. The second connection may be established in response to the command, and a message indicating that the request to establish the call was successfully received may be transmitted over the second connection. Also, a message indicating that an alert of the call is being issued may be transmitted over the second connection.