8 results about "Gravitational field" patented technology

A kind of relative navigation reference deviation calibration method of star and pulsar information fusion is disclosed, which comprises the following steps: configuring a star angular distance measuring sensor and an X-ray detector on a spacecraft; observing stars by the star angular distance measuring sensor to extract navigation information contained in two kinds of relativistic effects, i.e., star aberration caused by the movement of the spacecraft and light deflection caused by celestial gravitational field; observing pulsars by the X-ray detector to obtain pulse arrival time difference observations; combining spacecraft and earth orbit dynamics model to predict the state; processing star angular distance and pulse arrival time difference observations by an extended Kalman filter to correct the state prediction value, and obtaining the estimation of the spacecraft position and velocity, the geocenter position and velocity, and the sensor system error parameters, so as to realize the calibration of two kinds of reference deviations, i.e., earth ephemeris error and sensor system error. The present application provides a new way to improve the performance of relativistic navigation system.

This application relates to the field of accelerated transport technology, specifically to a cyclic superposition acceleration method and system based on a gravitational field. The method includes: determining the trajectory of a load unit around a natural gravitational field; arranging several acceleration units at intervals along the trajectory; placing the load unit on the trajectory and assigning it an initial velocity; and controlling the acceleration units to provide acceleration energy to the load unit as it passes through them. This application can utilize the natural gravitational environment to achieve stable, low-loss cyclic acceleration, meeting the high-efficiency operation requirements of long-distance transport.

This invention provides a rapid prediction method for lunar orbit rendezvous guidance, achieving high-precision and rapid prediction to meet mission requirements. The prediction method of this invention applies the gravitational field acceleration calculation method used for GPS autonomous orbit determination of Earth orbit satellites to the field of lunar orbit rendezvous. Addressing the problems that the algorithm cannot be directly applied to the design of lunar orbit rendezvous guidance strategies, improvements and upgrades are made one by one, resulting in a high-precision and rapid algorithm suitable for lunar orbit rendezvous flight control missions to meet mission requirements. Specifically, this invention is the first to transplant this algorithm to the field of lunar orbit applications, which is unprecedented. Considering the special characteristics of the lunar gravitational field, where the acceleration measures of various gravitational perturbations are of similar order and cannot be approximated by the J2 term alone, the J22 term perturbation acceleration is added to the algorithm, thereby significantly improving the computational accuracy and numerical stability of the algorithm.

The present application relates to the technical field of measurement, and particularly to a method for measuring speed with a gravitational field as a reference system, which can measure the speed of a substance without an external physical reference system. A reference object having a direct force interaction with the substance is an absolute reference system, such as light or electromagnetic waves propagating in a gravitational field or a substance, which has a direct force interaction with the field or the substance. Relative to the light, the gravitational field and the substance are absolute reference systems of the light. Because of the existence of the absolute reference system, when the substance has a relative speed relative to the field, the speed of the substance itself can be measured by the optical path (the optical path refers to the propagation path length of light or electromagnetic waves) of the field, and this process is the speed measurement with the gravitational field as a reference system.

The invention proposes a Gravitational and Magnetic Force to Electrical Energy Conversion System (GMECS), a solution based on the simple pendulum principle and developed from the successful foundation of the "Large-sized clock, low power consumption" invention (internationally published by WIPO in 2022). GMECS overcomes the inherent challenges of using a simple pendulum for large-scale electricity production by optimally and effectively combining the interaction of the Earth's gravitational field with the powerful magnetic field of Neodymium N52 rare-earth magnets and the controlled variable magnetic field of an electromagnet to generate significant and continuous torque. In this system, the pendulum's oscillation energy, maintained and amplified by a small amount of electrical energy from an external source (e.g., solar power), is converted into mechanical energy through a complex gearbox system comprising a one-way gearbox and a reversing gearbox. This mechanical energy is then transmitted to a speed-increasing gearbox to augment rotational speed, thereby rotating the rotor of a rare-earth magnet generator, producing useful electrical energy. Experiments have demonstrated the system's superior capability to generate 22W of output power with only 8.7W of input power, showing a positive and significant energy amplification factor (COP > 2.5). This additional energy is attributed to the efficient harnessing from the relative motion of the hundreds-of- kilogram pendulum within the Earth's gravitational field and the interaction between the magnetic field of rare-earth magnets and the controlled variable magnetic field of the electromagnet, via the pendulum's resonance mechanism. This successfully addresses technical challenges, including overcoming the inertia of the speed-increasing gearbox, the generator, and the Lenz's Law effect. The GMECS invention has the potential for scalable electricity production, offering significant benefits in energy savings, providing independent distributed power, being environmentally friendly, and having broad applicability in both industrial and agricultural sectors, especially in areas difficult to access traditional energy sources or requiring sustainable energy solutions.

This invention discloses a physical phenomenon experience learning system based on immersive virtual reality technology, comprising at least a hardware perception layer, a software platform layer, a core logic layer, and a functional module layer. In corresponding scenarios, dynamic commands are implemented through the hardware perception layer, and material attribute parameters in the physics dynamics engine are adjusted through the core logic layer to achieve interaction within the scene. This system deeply integrates experiential education concepts with virtual reality technology. By constructing a high-precision physics engine-driven, high-fidelity scene, it reconstructs ideal observation conditions such as resistance-free and customizable gravitational fields in virtual space. This facilitates a more intuitive, vivid, and cost-effective way for primary and secondary school students and the general public to overcome the limitations of real-world time and space, personally conduct classic and surreal physics experiments, effectively enhance their sense of spatial presence, and deepen their understanding of abstract physics knowledge.

An unidentified aerial phenomena field disturbance detector includes an accelerometer configured to measure a gravitational field surrounding the unidentified aerial phenomena field disturbance detector; a magnetometer configured to measure a magnetic field surrounding the unidentified aerial phenomena field disturbance detector; a microwave frequency detector configured to measure a specific band of microwave frequencies surrounding the unidentified aerial phenomena field disturbance detector; a controller; and an optical indicator configured to optically communicate information to a user of the unidentified aerial phenomena field disturbance detector. The controller determines a change in the gravitational field surrounding the unidentified aerial phenomena field disturbance detector when generates gravitational field values are outside a predetermined range of non-event field values. The controller controls the optical indicator to optically communicate the determined change in the gravitational field surrounding the unidentified aerial phenomena field disturbance detector.