The invention relates to the technical field of marine
hydrology monitoring, and discloses a low-altitude
observation method for
seawater suspended
sediment concentration, which comprises the following steps of: carrying digital photographic equipment by using a low-altitude observation platform, acquiring a
seawater suspended
sediment concentration image, simultaneously carrying out
water sample collection on a photographic sea area, positioning by using a global
satellite positioning system, and measuring the suspended
sediment content by using a filtering method. The obtained
seawater suspended
sediment concentration image is preprocessed, and automatic splicing of the image and automatic imaging of the orthoimage are achieved. And based on an optimized
artificial neural network algorithm, training by using the processed image data and actually measured suspended
sediment concentration data, establishing a seawater suspended
sediment concentration inversion model, and evaluating the model precision. According to the method, a high-resolution image is obtained by using a low-altitude observation platform, suspended sediment concentration inversion is carried out by optimizing an
artificial neural network model, the method has the advantages of high precision, low cost, flexibility, timeliness and the like, and the defects of
satellite remote sensing can be effectively overcome.