Abstract: A method is described which includes receiving or obtaining a time series of data (S1). The method also includes storing the time series of data to a storage device without interrupting the reception of the time series of data (S2). The method also includes, for each of a plurality of base time periods, at the end of a most recently elapsed base time period (S5) and without interrupting the reception or storage of the time series of data, calculating (S6) one or more measurements based on the time series of data corresponding to the most recently elapsed base time period and updating a binary tree structure indexing the one or more measurements and the time series of data. Updating the binary tree structure includes generating a new binary tree leaf (1, 2, 4, 5) corresponding to the most recently elapsed base time period (S7).

Abstract: A method is described which includes receiving or obtaining a time series of data (S1). The method also includes storing the time series of data to a storage device without interrupting the reception of the time series of data (S2). The method also includes, for each of a plurality of base time periods, at the end of a most recently elapsed base time period (S5) and without interrupting the reception or storage of the time series of data, calculating (S6) one or more measurements based on the time series of data corresponding to the most recently elapsed base time period and updating a binary tree structure indexing the one or more measurements and the time series of data. Updating the binary tree structure includes generating a new binary tree leaf (1, 2, 4, 5) corresponding to the most recently elapsed base time period (S7).

Abstract: A method for processing a primary data record, a spatial tree index and a plurality of time tree indexes is described. The method includes writing the primary data record to a primary data table, determining whether a spatial tree leaf node including location data exists and, if not, generating a spatial tree leaf node including the location data, and creating or updating spatial tree nodes connecting the spatial tree leaf node to a spatial tree root node. For spatial tree nodes including the location data, updating a respective time tree index by determining whether a time tree leaf node including time data exists and, if not, generating a time tree leaf node including the time data, and creating or updating time tree nodes connecting the time tree leaf node to a time tree root node. The time tree leaf node updated to include a pointer to the primary data record.

Abstract: Apparatus for generating an RF signal for use in RF signal detection is described. The apparatus comprises at least one processor configured to generate a set of IQ data based on at least one set of weighted IQ data, each set of weighted IQ data having a respective weight and a circuit configured to generate an RF signal using the set of IQ data. The at least one processor is configured to calculate each respective weight in dependence upon location of a signal detector or an antenna associated with the RF signal detector.

Abstract: Apparatus for generating an RF signal for use in RF signal detection is described. The apparatus comprises at least one processor configured to generate a set of IQ data based on at least one set of weighted IQ data, each set of weighted IQ data having a respective weight and a circuit configured to generate an RF signal using the set of IQ data.

Abstract: A method for processing a primary data record, a spatial tree index and a plurality of time tree indexes is described. The method includes writing the primary data record to a primary data table, determining whether a spatial tree leaf node including location data exists and, if not, generating a spatial tree leaf node including the location data, and creating or updating spatial tree nodes connecting the spatial tree leaf node to a spatial tree root node. For spatial tree nodes including the location data, updating a respective time tree index by determining whether a time tree leaf node including time data exists and, if not, generating a time tree leaf node including the time data, and creating or updating time tree nodes connecting the time tree leaf node to a time tree root node. The time tree leaf node updated to include a pointer to the primary data record.

Abstract: Apparatus for generating an RF signal for use in RF signal detection is described. The apparatus comprises at least one processor configured to generate a set of IQ data based on at least one set of weighted IQ data, each set of weighted IQ data having a respective weight and a circuit configured to generate an RF signal using the set of IQ data. The at least one processor is configured to calculate each respective weight in dependence upon location of a signal detector or an antenna associated with the RF signal detector.

Abstract: Apparatus for generating an RF signal for use in RF signal detection is described. The apparatus comprises at least one processor configured to generate a set of IQ data based on at least one set of weighted IQ data, each set of weighted IQ data having a respective weight and a circuit configured to generate an RF signal using the set of IQ data.

Abstract: A sample holder for use in an EPR spectrometer is extruded using a material having a low dielectric constant. The extruded sample holder has a plurality of channels formed in it for holding sample material for testing. The shape and orientation of these channels are such that losses due to the high dielectric constant of the sample are minimized. Sample holders for cylindrical and rectangular cavity resonators and uniform field cavity resonators are disclosed, as well as for two-gap and four-gap loop-gap resonators.