Algae biomass and radius prediction based on ARMA-BP neural network combination model

Natural astaxanthin is a highly effective antioxidant widely used in aquaculture, cosmetics and medicine. Haematococcus pluvialis is rich in astaxanthin, which is the main source of astaxanthin extraction [1]. Monitoring the growth status of Haematococcus pluvialis is a prerequisite for extracting astaxanthin. Radius is an important indicator of the growth state of algae cells, which is of great significance for the detection of algal biomass and radius [2]. The focus of this paper is on the proliferation and culture stage of Haematococcus pluvialis. The BP neural network model was established by selecting three influencing factors as inputs. The established BP model estimates the nonlinear residuals in the ARMA model, integrates the prediction results of the entire sequence, and finally establishes the ARMA-BP prediction model. The effect is ARMA-BP model >BP neural network model.