摘要:
Techniques for surface exploration and monitoring are presented. In representative embodiments, a system is provided that can perform multiple types of measurements of a surface. For example a single system of survey probes and one or more survey controllers can be used to offer both seismic and electrical measurements. A survey controller can be configured to automatically poll survey probes to obtain identifiers of the probes and determine a relative order the probes. Survey probes can be configured to: (a) collect signals associated with a surface; (b) digitize the signals to form digital data; and (c) store the digital data for later transmission to the survey controller. Relative positions of survey probes can be automatically determined using a transmitting beacon or other techniques. Survey probes can automatically disconnect from a power conduit while measuring a surface property and operate using an internal source of power when disconnected, to reduce noise. The survey controller can be remotely accessible through a computer network for remote control of the survey probes.
摘要:
A method of parallel suppression of interference, and corresponding stage and receiver is disclosed according to the invention, parallel suppression of interference is carried out starting from the signals selected by a maximum likelihood criterion based on the calculation of a metric and the search for the smallest possible metric.
摘要:
A method of parallel suppression of interference, and corresponding stage and receiver is disclosed according to the invention, parallel suppression of interference is carried out starting from the signals selected by a maximum likelihood criterion based on the calculation of a metric and the search for the smallest possible metric.
摘要:
A fuel station site architecture includes at least one point-of-sale (POS) controller, at least one new generation fuel dispenser having advanced features, and a site forecourt controller coupled between the POS controller and the fuel dispenser. The site forecourt controller includes a device for interfacing the POS controller with the fuel dispenser by providing a protocol and electrical signal interface between a first protocol and electrical signal requirement of the POS controller and a second protocol and electrical signal requirement of the fuel dispenser, wherein the second protocol and electrical signal requirement include requirements for features which may not be supported by a prescribed POS controller.
摘要:
The component essentially comprises two correlators (TR1, F1), (TR2, F2) shifted by one period or cycle from the information element. This component fulfils both the correlation and delay functions. The component also comprises a transmission channel with a filter identical to the correlator of the reception channel.Application to radiocommunications.
摘要:
A Differential receiver of direct sequence spread spectrum signals, wherein, the intermediate frequency stage comprises N filtering and amplifying channels in N separate bands. The amplification of a channel is adjusted so that the power levels delivered by the channels correspond to a predetermined power distribution law.