31 results about "Radar tracker" patented technology

A star tracker determines a location or orientation of an object, such as a space vehicle, by observing unpolarized light from one or more stars or other relatively bright navigational marks, without imaging optics, pixelated imaging sensors or associated pixel readout electronics. An angle of incidence of the light is determined by comparing signals from two or more differently polarized optical sensors. The star tracker may be fabricated on a thin substrate. Some embodiments have vertical profiles of essentially just their optical sensors. Some embodiments include micro-baffles to limit field of view of the optical sensors.

A system (18) includes: a) A vehicle (12) includes an attitude or angular velocity control system (38), a plurality of star trackers or star sensors (22) each having a field of view (28); b) a memory (30) having a star catalog (32), a star pair catalog (58) and a reference table (56) stored therein; and c) a processor (24) coupled to the attitude or angular velocity control system (38), the star trackers or star sensors (22), and the memory (30). The processor (24) determines the vehicle inertial attitude or angular velocity or sensor alignment, based, in part, on the star pair catalog (58) and reference table (56). The design of the star pair catalog (58) and reference table (56) is suitable for rapid determination of attitude or angular velocity or sensor alignment, and an efficient use of memory.

A method for tracking the accumulated load and any load events that exceed a maximum threshold in a mobile farm implement. The mobile farm implement includes a plurality of load sensors which provide a weight of the material in a bin to an indicator, and a memory that stores the accumulated load and the highest load events.

The invention provides a miniaturized fixed star tracking optical system capable of achieving whole-day observation. The whole-day miniaturized fixed star tracking optical system comprises an imaging unit, a band-pass fiber, a main reflector, an auxiliary reflector and a scan reflector and a through hole is formed in the center of the main reflector, wherein the imaging unit, the band-pass fiber, the main reflector, the auxiliary reflector and the scan reflector are sequentially arranged along an optical axis of an imaging optical path; incident light sequentially passes through the scan reflector, the main reflector and the auxiliary reflector, is reflected for three times, and then is emitted to the imaging unit through the central through hole of the main reflector and the band-pass filter; a part of an optical path of the incident light coincides with a part of an imaging optical path in the scanning field from 30 degrees to 50 degrees so that the requirement for miniaturization of the system can be satisfied; the main reflector and the auxiliary reflector are respectively provided with a light shield and the edge of the scan reflector perpendicularly extends so that a light shielding board can be formed. Field scanning is conducted through the scan reflector, a zone between the 30-degree airspace and the 80-degree airspace of the zenith can be observed all day, and an instant field of the system is smaller than 30'.

The invention discloses a remote control automobile automatic alarm tracker which is installed in an automobile body and comprises a shell and a control system. The control system is composed of a circuit board, a GSM signal receiver, an SOS transmitter, a GPS signal receiver, an automatic dialing single-chip microcomputer, a memorizer, a power supply, a light display controller, a processor and an acceleration gravity sensor, wherein the GSM signal receiver, the SOS transmitter, the GPS signal receiver, the automatic dialing single-chip microcomputer, the memorizer, the power supply, the light display controller, the processor and the acceleration gravity sensor are arranged on the circuit board. An APP management system matched with the alarm tracker is arranged on a cell phone of an automobile owner. By means of the control system of the automobile automatic alarm tracker, mutual control between the tracker and the cell phone with the matched APP management system can be achieved, and therefore the tracker calls the nearest police center at the current position, the time for chasing an automobile stealer is saved for police, whether the power supply supplies power or not is controlled through the 10 m distance between the tracker and the cell phone with the matched APP management system, electric energy is better saved, the runtime of the tracker is prolonged, and the situation that the tracker calls the police by mistake is avoided.