Laser pulse detector for performing in-rail checking on ground positioning precision of laser altimeter

Abstract

The invention discloses a laser pulse detector for forming in-rail checking on ground positioning precision of a laser altimeter. The detector comprises the components of a detector protecting and indicating film, a stray light suppressing optical filter, an upper electric switch, an RF antenna, a detector protecting housing, a reset switch, an autonomous power supply unit, a timing module, a laser response indicating lamp, a laser energy acquisition circuit, a detector control circuit, an RF communication module and a mounting base. The detector control circuit can control the laser pulse detector to work in three different operating modes, namely a standby operating mode, a laser pulse triggering acquiring and timing operating mode and an information wireless transmitting mode. The laserpulse detector can realize data acquisition in performing in-rail checking on the positioning precision of the laser altimeter and furthermore has an important application prospect in the technical fields of optical radiation measurement, satellite remote sensor calibration and mapping satellite calibration.

Description

technical field [0001] The invention relates to the technical fields of optical radiation measurement, satellite remote sensor calibration and ground precision calibration of surveying and mapping satellites, in particular to a laser pulse detector for on-orbit calibration of the ground positioning precision of a laser altimeter. Background technique [0002] The key special project of high-resolution earth observation system is one of the major scientific and technological projects deployed in the "National Medium and Long-term Science and Technology Development Plan (2006-2020)", centering on the purpose of establishing my country's strategic space infrastructure, the overall construction is by space-based A new generation of earth observation system composed of five major systems, near space, aviation, ground and application, to meet the needs of national economic construction, social development and national security. [0003] It has become an important technical means to...

AI Technical Summary

Problems solved by technology

[0004] From the principle of space-borne laser altimetry, it can be seen that while the laser altimeter acquires data in orbit, it uses the GPS, star sensor, gyroscope and other loads carried on the star to simultaneously acquire geometric parameters such as orbit and attitude at a certain frequency. The complex process of cooperating loads such as time measurement, attitude measurement, and orbit measurement. This multi-load integration feature makes the error sources that affect the geometric accuracy of laser altimetry more diverse and more complex.

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