A Passive Detection Orbit Determination Method Based on Deep Neural Network

Abstract

The invention discloses a passive detection orbit determination method based on a deep neural network, comprising the following steps: Step 1, defining a spacecraft training data generator, and obtaining training data of a deep neural network through the data generator; Step 2, Preprocess the training data generated in step 1 to obtain standardized data; step 3, define the deep neural network, determine the appropriate parameters, and train the deep neural network offline through the standardized data to obtain the nonlinearity of only angle measurement relative to orbit determination Relative motion model; step 4, deploying the nonlinear relative motion model on the sensing satellite, and inputting the relative measurement angle into the model to realize online determination of the relative orbit of the target satellite. In the present invention, three sets of relative line-of-sight measurement angles are set for one-to-one mapping of model input, so as to realize the determination of the relative orbit of the non-cooperative target in the passive detection on the orbit.

Description

technical field [0001] The invention relates to the technical field of optical camera relative orbit determination and navigation, in particular to a passive detection orbit determination method based on a deep neural network. Background technique [0002] With the increasing frequency of space activities, the number of space non-cooperative targets such as invalid satellites and space debris is increasing rapidly. The near-Earth space environment is becoming more and more deteriorating, and the safety problems of spacecraft in orbit are becoming more and more prominent. Therefore, it is of great significance to enhance space situational awareness and conduct on-orbit autonomous service research such as maintenance and de-orbit cleaning for space non-cooperative targets such as invalid satellites. The key prerequisite for autonomous on-orbit service and enhanced space situational awareness is to realize The target is relatively orbited independently. [0003] At present, s...

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