Sensor main mounting boxes and passive optical sensor

Abstract

The invention provides sensor main mounting boxes and a passive optical sensor. The passive optical sensor comprises sensor main mounting boxes and a corporative target; the sensor main mounting boxes are respectively arranged on a first aircraft oppositely; the corporative object is arranged on a second aircraft and used for reflecting the pulse laser of the sensor main mounting boxes. Each sensor main mounting box comprises an optical system, a data processing unit, a camera and a main control computer, wherein each optical system comprises a laser diode, a corner mirror and a light splitting prism; each data processing unit comprises a control module used for controlling the laser to send out the laser signal which performs pulse encoding through a duty ratio, and controlling the camera to synchronize with the laser to respectively acquire the images when the laser emits light and does not emit light according to the preset encoding scheme, and sending the images when the light is emitted and not emitted to the main control computer; and the main control computer is connected with the camera to calculate the relative position and posture between the two aircrafts according to the images when the light is emitted and not emitted.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a sensor main installation box capable of emitting encoded pulsed laser light to irradiate a cooperative target and imaged by a camera, and a passive optical sensor. Background technique [0002] Space rendezvous and docking refers to the entire flight process in which two or more spacecraft meet (rendezvous) at a predetermined position and time in orbit, and then are structurally connected as one (docking). [0003] Active sensors for space rendezvous and docking attitude measurement and estimation include laser scanners and ranging sensors, such as lidar. Although this type of sensor can provide accurate relative position and attitude information within a large distance range, it is generally expensive, consumes a lot of energy, and has limited uses. Using cameras as sensors, supplemented by advanced image processing and tracking algorithms, can not only provide accurate re...

AI Technical Summary

Problems solved by technology

Transmitting laser light in a non-pulse manner not only consumes a lot of energy, but also shortens the observation distance of the sensor accordingly. In order to make the sensor have a larger range of action, it is necessary to design a more complex optical system or supplement it with other types of sensors. , so that the structure of the entire sensor becomes more complex, larger and heavier

At the same time, the laser without pulse coding is not easy to remove the background interference in the image and identify the cooperative target, so it is easy to generate data processing errors, which will adversely affect the attitude calculation and estimation between the two spacecraft

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