Method for optimizing flight speed of remotely-sensed scan imaging platform

Patent metadata

Field	Value
Publication number	US-9778663-B2
Application number	US-201415037646-A
Country	US
Kind code	B2
Filing date	Jun 25, 2014
Priority date	Dec 20, 2013
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

A method for optimizing a flight speed of a remotely-sensed scan imaging platform. The method comprises: selecting a reference point; obtaining a remotely-sensed scan image in a reference point region, and processing data; and optimizing a flight speed of a remotely-sensed scan platform. By optimizing a movement speed of a remotely-sensed movement platform, the method can prevent a geometric dimension of a target in a remotely-sensed scan image from being distorted, so as to obtain a high-precision remotely-sensed image of a ground target; and the method can be used for airborne and satellite borne remotely-sensed images.

First claim

The invention claimed is:

1. A method for optimizing flight speed of a remotely-sensed scan imaging platform, the method comprising:
carrying the remotely-sensed scan imaging platform on at least one of an airborne vehicle and a satellite-borne vehicle, whereby the remotely-sensed scan imaging platform is positioned over a ground surface;
selecting reference points on the ground surface by:
selecting point A and point B on the ground surface as reference points,

wherein a distance between point A and point B is L AB km;
selecting the central point of a connecting line of point A and point B as a reference point C; and
selecting point D as another reference point to make a connecting line CD of point D and point C perpendicular to the connecting line AB of point A and point B, and a distance between point D and point C be L CD km;

obtaining, with an image sensor of the remotely-sensed scan imaging platform, a remotely-sensed scan image in a reference point region, and processing data;
optimizing a flight speed of the remotely-sensed scan imaging platform.

2. The method for optimizing flight speed of a remotely-sensed scan imaging platform according to claim 1 , wherein obtaining a remotely-sensed scan image in a reference point region, and processing data further includes: using a remotely-sensed scan platform to carry a remote sensing camera to obtain the remotely-sensed images A′, B′, C′ and D′ of reference points A, B, C and D at a movement speed V; and calculating the distance between A′ and B′ in the remotely-sensed images as L A′B′ pixels, and the distance between C′ and D′ as L C′D′ pixels.

3. The method for optimizing flight speed of a remotely-sensed scan imaging platform according to claim 1 , wherein optimizing the flight speed of the remotely-sensed scan imaging platform further includes calculating an optimized movement speed V′ of the remotely-sensed scan imaging platform by using a movement speed V of the remotely-sensed scan imaging platform, distance L A′B′ between A′ and B′ in the remotely-sensed scan image, distance L C′D′ between C′ and D′, distance L AB between point A and point B and distance L CD between point D and point C according to a formula of

V
′

=

V
·

L
AB

·

L

C
′

⁢

D
′

L
CD

·

L

A
′

⁢

B
′

.

Assignees

• Univ Jiangsu

Inventors

• Zou Xiaobo
• Shi Jiyong
• Zhao Jiewen
• Huang Xiaowei
• Zhu Yaodi
• Li Zhihua

Classifications

• G06T2207/10032

  Satellite or aerial image; Remote sensing · CPC title

• G05D13/62

  characterised by the use of electric means, e.g. use of a tachometric dynamo, use of a transducer converting an electric value into a displacement {(electric motor control H02P)} · CPC title

• G06T5/006

  Physics · mapped topic

• G05D13/02 Primary

  Details · CPC title

• G06T7/246

  using feature-based methods, e.g. the tracking of corners or segments · CPC title