Impulsive acoustic sources have several advantages and disadvantages On the positive side, they are highly mobile and deliver a high source level without the use of connecting cables. On the negative side, their combination of high power and nondirectionality yields a high background of… More

The fleet introduction of advanced multibeam sensors as well as an increased acoustic channel capacity are expected to create an operator workload on the P3 UIII and other Airborne ASW platforms. If the increased number of sensor channels are presented as additional pages to the existing acoustic… More

Environmental robustness is a significant challenge facing the extension of the Airborne ASW search mission to littoral environments. As ASW systems are used increasingly in littoral waters, environmentally adaptive signal processing, classification, and display techniques are required if the… More

Future Airborne ASW tactics will depend heavily upon the use of active sonar and bistatics with a distributed field of sonobuoys as the primary means of initial target detection and localization. However, the bistatic detection and classification problem is compounded by short contact times, evasive… More

Environmentally robust detection and classification aids are critical to the ASW search mission in order to assist in decision making and reduce operator workload. In future multi-static, multi-receiver search missions, the number of alerts is expected to increase dramatically. An operator will… More

Not Available Active networks break from the traditional networking paradigm by allowing for the injection of customized computations into the network. This technology enables the rapid deployment of new network services for future Navy applications. This Phase I SBIR effort proposes an innovative… More

Active sonar systems face a significant declutteringproblem especially when operating in shallow water. In futuremulti-static, multi-receiver search missions, the number of alertsis expected to increase dramatically. Tactical scenarios presenta further complication because response time is… More

Detailed knowledge of the operational environment can be exploited to improve the capabilities of active sonar detection and classification systems. The deployment geometry, transmit bandwidth and averaging time can all be set to optimize detectionperformance given the detection system has a… More

"Detailed knowledge of the operational environment can beexploited to improve the capabilities of active sonar detectionand classification systems. The deployment geometry, transmitbandwidth and averaging time can all be set to optimize detectionperformance given the detection system has a detailed… More

"In a tactical deployment of ADAR sonobuoys, a number of VHF "wideband" channels are used for the uplink communication between each sonobuouy and a tracking aircraft. In littoral environments close to shore-based commercial and other radio frequencyemissions, the uplink frequency bands are subject… More

"ASW tactical missions require accurate knowledge of the environment to plan and conduct operations, especially in littoral environments. In concert with the planned deployment of the TAM environmental sensor, the Navy needs a Tactical Decision Aid toassist Navy war-fighters on-board aircraft and… More

"In a tactical deployment of ADAR sonobuoys, a number of VHF "wideband" channels are used for the uplink communication between each sonobuouy and a tracking aircraft. In littoral environments close to shore-based commercial and other radio frequencyemissions, the uplink frequency bands are subject… More

"In a tactical deployment of ADAR sonobuoys, a number of VHF "wideband" channels are used for the uplink communication between each sonobuouy and a tracking aircraft. In littoral environments close to shore-based commercial and other radio frequencyemissions, the uplink frequency bands are subject… More

The Navy requires a new volumetric acoustic receive array with a larger horizontal and vertical aperture for use with the Extended Echo Ranging (EER) family of active Anti-Submarine Warfare (ASW) search systems. This requirement is driven by the fact thatthe current AN/SSQ-101 Air Deployable Active… More

ASW tactical missions require accurate knowledge of the environment to plan and conduct operations, especially in littoral environments. To meet these requirements, PMA-264's TAMDA team is developing the TAM environmental sensor and accompanying TAMdecision aid. The TAMDA project's goal is to… More

New ways are sought to improve air ASW search performance by estimating acoustic environmental parameters using existing Fleet assets. Successful ASW missions require characterization of the environment that is accurate, current, and local. Currenttechniques include pre-mission planning efforts… More

The Navy requires a new Mid-Frequency acoustic receive array to serve as a multistatic receiver intended for use with the SQS-53C Bow Sonar and the ALFS Dipping Sonar. The SBIR solicitation is very specific in terms of the required array gain, digitaluplink format/precision, and dynamic range for… More

The Objective of this SBIR is the design and implementation of an acoustic receive array with a large vertical aperture for use as an environmental measurement sensor. The intent is to also develop a sensor with long life potential so that environmental parameters that change with time can be… More

Currently, collections of sonobuoy sources and receivers (sonobuoy fields) are being used to search for enemy submarines. These systems can potentially cover large search areas in relatively short times. However, like all sonar systems, their performance is very difficult to predict. This… More

The use of Multistatic/Multi-platform ASW capabilities are needed to counter the improvement in capability of enemy submarines deployed by potential adversaries. The need exists for systems that provide a wide area search capability while at the same time providing sufficient standoff distances for… More

The Navy uses collections of sonobuoy sources and receivers to search for enemy submarines. These systems can potentially cover large search areas in a relatively short time. However, like all sonar systems, performance is very difficult to predict either in-situ or after-the-fact. In the Phase 1,… More

The integration of multi-sensor data into effective ASW weapons systems is becoming more critical as the submarine threat has become quieter, and the areas of operation will include the harsher littoral environments. Correlating data from multiple sensors with different detection modes will be… More

The Navy requires a new modular signal processing architecture to host various candidate algorithms in support of the dense field of miniature sonobuoy concept. The dense field concept is in direct support of the N88 Air ASW Vision Statement which states that "continued pursuit of the… More

The integration of multi-sensor data into effective ASW weapons systems is becoming more critical as the submarine threat has become quieter, and the areas of operation will include the harsher littoral environments. Correlating data from multiple sensors with different detection modes will be… More

Quick and accurate sonobuoy location is becoming more critical in the airborne ASW problem as multi-static active search systems and data fusion techniques play more dominant roles. Sonobuoy locations must be determined automatically and constantly updated in order to estimate target locations as… More

The Navy requires a new modular signal processing architecture to host various candidate algorithms in support of the dense field of miniature sonobuoy concept. The dense field concept is in direct support of the N88 Air ASW Vision Statement which states that "continued pursuit of the… More

The objective of this Phase I effort is to develop a new means of detecting undersea targets in the reverberation return as well as in the forward scatter zone. Previous tests regarding Forward Scatter Detection had not been able to establish acceptable False Alarm Rates (FAR), at a sufficiently… More

The objective of this project is to develop a new means of detecting and classifying undersea targets in the return of active sonar waveforms, as well as in their forward scatter zone. The techniques under discussion cover an area of detection and classification that is currently un-attainable with… More

The Phase II implementation of the Sonobuoy Location System (SLS) utilizes existing sonobuoy RF signals to estimate the buoy positions. Using the techniques developed in Phase I, simulation of the SLS algorithm has provided sonobuoy position estimates well within the 100 yard accuracy requirement.… More

The Navy requires a new Environmental Wideband Acoustic Receiver and Source (EWARS) sensor to facilitate the gathering of environmental and intelligence and data from Navy ASW platforms. The newly developed EWARS sensor must be deployable in shallow and deep environments, and be capable of operating… More

Quick and accurate sonobuoy location is becoming more critical in the airborne ASW problem as multi-static search systems and data fusion techniques play more dominant roles. Sonobuoy locations must be determined quickly, and be constantly updated in order to estimate target locations as soon as… More

The U.S. Navy requires a new Environmental Wideband Acoustic Receiver and Source (EWARS) sensor to facilitate the gathering of environmental data from Navy ASW platforms. The newly developed EWARS sensor must be deployable in shallow and deep environments, and be capable of operating over a broad… More