Abstract: A system for providing locations of emergency callers receives call data related to emergency calls received at a public safety answering point (PSAP) and a supplemental data signal that includes a location of an emergency. A signal correlation engine determines whether the supplemental data signal corresponds to one of the emergency calls received at the PSAP. A web server provides a user interface that includes a map and a supplemental signal indicator corresponding to the supplemental data signal. The supplemental signal indicator is positioned on the map at the location of the emergency, and the supplemental signal indicator has a visual characteristic indicating whether or not the supplemental data signal corresponds to an emergency call received at the PSAP.

Abstract: An emergency system can access a variety of situational data items, such as video streams, facility information, and present and past incident data. The emergency system identifies data items that may be relevant to a particular incident and provides the relevant data items in one or more user interfaces. For example, the emergency system identifies relevant data items based on the reported location of the incident and the type of incident. As additional incident information is received or entered by telecommunicators, the emergency system can further filter and surface data items likely to be useful in responding to the incident. Certain data items may only be permitted to be viewed by certain types of users, or under certain conditions. The emergency system may ensure that data items are provided to authorized users and in permitted use cases.

Abstract: An emergency system can access a variety of situational data items, such as video streams, facility information, and present and past incident data. The emergency system identifies data items that may be relevant to a particular incident and provides the relevant data items in one or more user interfaces. For example, the emergency system identifies relevant data items based on the reported location of the incident and the type of incident. As additional incident information is received or entered by telecommunicators, the emergency system can further filter and surface data items likely to be useful in responding to the incident. Certain data items may only be permitted to be viewed by certain types of users, or under certain conditions. The emergency system may ensure that data items are provided to authorized users and in permitted use cases.

Abstract: An emergency system can access a variety of situational data items, such as video streams, facility information, and present and past incident data. The emergency system identifies data items that may be relevant to a particular incident and provides the relevant data items in one or more user interfaces. For example, the emergency system identifies relevant data items based on the reported location of the incident and the type of incident. As additional incident information is received or entered by telecommunicators, the emergency system can further filter and surface data items likely to be useful in responding to the incident. Certain data items may only be permitted to be viewed by certain types of users, or under certain conditions. The emergency system may ensure that data items are provided to authorized users and in permitted use cases.

Abstract: A system for providing locations of emergency callers receives call data related to emergency calls received at a public safety answering point (PSAP) and a supplemental data signal that includes a location of an emergency. A signal correlation engine determines whether the supplemental data signal corresponds to one of the emergency calls received at the PSAP. A web server provides a user interface that includes a map and a supplemental signal indicator corresponding to the supplemental data signal. The supplemental signal indicator is positioned on the map at the location of the emergency, and the supplemental signal indicator has a visual characteristic indicating whether or not the supplemental data signal corresponds to an emergency call received at the PSAP.

Abstract: A system for providing locations of emergency callers receives call data related to emergency calls received at a public safety answering point (PSAP) and a supplemental data signal that includes a location of an emergency. A signal correlation engine determines whether the supplemental data signal corresponds to one of the emergency calls received at the PSAP. A web server provides a user interface that includes a map and a supplemental signal indicator corresponding to the supplemental data signal. The supplemental signal indicator is positioned on the map at the location of the emergency, and the supplemental signal indicator has a visual characteristic indicating whether or not the supplemental data signal corresponds to an emergency call received at the PSAP.

Abstract: A system for providing locations of emergency callers receives call data related to emergency calls received at a public safety answering point (PSAP) and a supplemental data signal that includes a location of an emergency. A signal correlation engine determines whether the supplemental data signal corresponds to one of the emergency calls received at the PSAP. A web server provides a user interface that includes a map and a supplemental signal indicator corresponding to the supplemental data signal. The supplemental signal indicator is positioned on the map at the location of the emergency, and the supplemental signal indicator has a visual characteristic indicating whether or not the supplemental data signal corresponds to an emergency call received at the PSAP.

Abstract: A garment for protecting the head and neck of a user including a garment body with a neck opening. A hood attached to the garment body. A stretchable tubular knitted collar, attached to the garment body approximate to the neck opening of the garment body and inside at least a portion of the hood.

Abstract: In the preferred embodiment, an encrypted GPS signal is down-converted from RF to baseband to generate two quadrature components for each RF signal (L1 and L2). Separately and independently for each RF signal and each quadrature component, the four down-converted signals are counter-rotated with a respective model phase, correlated with a respective model P code, and then successively summed and dumped over presum intervals substantially coincident with chips of the respective encryption code. Without knowledge of the encryption-code signs, the effect of encryption-code sign flips is then substantially reduced by selected combinations of the resulting presums between associated quadrature components for each RF signal, separately and independently for the L1 and L2 signals. The resulting combined presums are then summed and dumped over longer intervals and further processed to extract amplitude, phase and delay for each RF signal.

Abstract: The front end in GPS receivers has the functions of amplifying, down-converting, filtering and sampling the received signals. In the preferred embodiment, only two operations, A/D conversion and a sum, bring the signal from RF to filtered quadrature baseband samples. After amplification and filtering at RF, the L1 and L2 signals are each sampled at RF at a high selected subharmonic rate. The subharmonic sample rates are approximately 900 MHz for L1 and 982 MHz for L2. With the selected subharmonic sampling, the A/D conversion effectively down-converts the signal from RF to quadrature components at baseband. The resulting sample streams for L1 and L2 are each reduced to a lower rate with a digital filter, which becomes a straight sum in the simplest embodiment. The frequency subsystem can be very simple, only requiring the generation of a single reference frequency (e.g. 20.46 MHz minus a small offset) and the simple multiplication of this reference up to the subharmonic sample rates for L1 and L2.

Abstract: In a new formulation for digital phase-locked loops, loop-filter constants are determined from loop roots that can each be selectively placed in the s-plane on the basis of a new set of parameters, each with simple and direct physical meaning in terms of loop noise bandwidth, root-specific decay rate, and root-specific damping. Loops of first to fourth order are treated in the continuous-update approximation (B.sub.L T .fwdarw.0) and in a discrete-update formulation with arbitrary B.sub.L T. Deficiencies of the continuous-update approximation in large-B.sub.L T applications are avoided in the new discrete-update formulation.

Abstract: A skateboard-type platform is described using standard skateboard hardware including wheels, axles, trucks, and mounting devices and including a lowered platform for placement of the user's feet in a parallel position thus simulating the foot placement, posture, and turning motions involved in snow skiing.