A system for determining the location of pipelines using at least one geopig that is introduced into a pipeline, advances therein and that has a magnetic source for generating a magnetic field, wherein at least one unmanned aerial vehicle is provided with magnetic field sensors and position determination devices, a controller is provided for determining the field strength profile of the magnetic field and for positioning the unmanned aerial vehicle at a defined distance from the at least one geopig, and a device is provided for determining the location of the at least one geopig from the position of the unmanned aerial vehicle and the defined distance between the at least one geopig and the unmanned aerial vehicle.

A system for determining the location of pipelines using at least one geopig that is introduced into a pipeline, advances therein and that has a magnetic source for generating a magnetic field, wherein at least one unmanned aerial vehicle is provided with magnetic field sensors and position determination devices, a controller is provided for determining the field strength profile of the magnetic field and for positioning the unmanned aerial vehicle at a defined distance from the at least one geopig, and a device is provided for determining the location of the at least one geopig from the position of the unmanned aerial vehicle and the defined distance between the at least one geopig and the unmanned aerial vehicle.

The present invention provides an airborne electromagnetic receiver having a large dimension to allow low transmitter base frequency. A modular and configurable suspension assembly is provided for use within a receiver support structure and suspending the support structure. The suspension assembly has a rigid support having a suspension portion, and links connecting the suspension portion and the suspended structure. The links are adjustable in length and tension to radially suspend said equipment support structure. The natural frequency of the suspension assembly and the suspended receiver motion can be optimized by adjusting mass distribution, suspension link length and suspension link tension. The suspension assembly can be used to suspend a receiver having large receiver coils. The suspension assembly converts high frequency vibration forces imparted on the receiver to a low frequency oscillation. The suspension assembly may also be tuned to avoid coincidence with the excitation frequencies.

The present invention provides an airborne electromagnetic receiver having a large dimension to allow low transmitter base frequency. A modular and configurable suspension assembly is provided for use within a receiver support structure and suspending the support structure. The suspension assembly has a rigid support having a suspension portion, and links connecting the suspension portion and the suspended structure. The links are adjustable in length and tension to radially suspend said equipment support structure. The natural frequency of the suspension assembly and the suspended receiver motion can be optimized by adjusting mass distribution, suspension link length and suspension link tension. The suspension assembly can be used to suspend a receiver having large receiver coils. The suspension assembly converts high frequency vibration forces imparted on the receiver to a low frequency oscillation. The suspension assembly may also be tuned to avoid coincidence with the excitation frequencies.

A system includes a ground based area, an electromagnetic (EM) interrogation device having an EM emitter that directs an EM beam at the ground based area. The EM interrogation device includes a detector array that receives reflected EM radiation from the EM beam, and a controller having a ground movement description module that determines a movement profile of the ground based area in response to the reflected EM radiation.

A system includes a ground based area, an electromagnetic (EM) interrogation device having an EM emitter that directs an EM beam at the ground based area. The EM interrogation device includes a detector array that receives reflected EM radiation from the EM beam, and a controller having a ground movement description module that determines a movement profile of the ground based area in response to the reflected EM radiation.

A marking identification system comprising a marking database, a drone, and a data network communicatively coupled to the marking database and drone. The marking database is arranged to store marking data associated with one or more markings. The marking data can include one or more marking locations within a geographic area and a type of infrastructure associated with each of the one or more marking. The drone is arranged to determine the location of the drone via one or more location sensors, receive data from the marking database, and deploy to the location within the geographic area. The drone is also arranged to detect one or more markings within the geographic area, detect an indicator in pain associated with each of the detected markings, and determine a type of infrastructure associated with each of the detected markings based on the detected indicator associated with each of the markings.

A multi-rotor unmanned aerial vehicle (UAV) includes a central body, a plurality of branch members connected to the central body, each branch member configured to support a corresponding actuator assembly, a communication module disposed within the central body and configured to establish a communication channel between the UAV and a remote device, and an indicator light disposed on one of the plurality of branch members. The indicator light is configured to indicate whether the communication channel is established.

A multi-rotor unmanned aerial vehicle (UAV) includes a central body, a plurality of branch members connected to the central body, each branch member configured to support a corresponding actuator assembly, a communication module disposed within the central body and configured to establish a communication channel between the UAV and a remote device, and an indicator light disposed on one of the plurality of branch members. The indicator light is configured to indicate whether the communication channel is established.

Embodiments include a method for retrieving atmospheric aerosol based on statistical segmentation. Firstly a multi-band remote sensing image including an apparent reflectance and an aerosol optical thickness look-up table corresponding to a retrieval band is obtained, then pixels are partitioned and screened according to apparent reflectance segments of a mid-infrared 2.1 micrometer band. After that the retained pixel sets are further partitioned and screened according to the apparent reflectance segments of the mid-infrared 1.6 micrometer band. Finally the obtained pixel sets are partitioned into two categories according to the pixel number, one category including pixels having more pixels, the other including those with less pixels. The category with more pixels is taken as the reference part for retrieval.