Aerospace System Private Limited
   
   
 
   
Being primarily a technology focussed company, with requisite physical and human resources, ASL has been undertaking development projects both on behalf of its customers, as also for internal research and development. The projects comprise advanced electronic hardware, embedded software and application software.

The specific development projects executed by ASL for different customers in the recent past are listed here:
 
Low Frequency Analysis & Ranging  
Sonars use low frequencies for under-water radio wave communication and detection. As the radio waves propagate in water, they get affected by the obstacles in the medium. In the project, the low frequency sonar data stream was transferred first to a hard disc. Subsequent signature analysis is carried out to determine the characteristics of the obstacles. The hardware unit was implemented on Xilinx FPGA platform.  
GPS based Time/Frequency Synchronisation  
As a by-product from the GPS, the data output contains very accurate time information. This information can be usefully utilised to synchronize distributed networks in the Information Technology, Telecom and Power sectors of Industry. Under the project, the time information is extracted from the GPS data strings, and is converted to IRIG-B format suitable for binary time signals. The implementation is done on Altera FPGA platform and embedded soft processor NIOS. Following additional interfaces are provided for network time synchronisation, eternal display, etc.:  

UART
USB 2.0
Ethernet
As another one of the applications of GPS derived time, a GPS based clock was designed to provide accurate time in an autonomous mode by synchronising with NavStar constellation of GPS satellites. ASL GeoTime 2511 is the product developed as a low cost solution to accurate timing when compared to the conventionally used Atomic Clocks in scientific or industrial applications. GeoTime 2511 can work both as a Master clock or a Master driving several Slave clock displays meeting the requirements of a host of users like Airports, Hospitals, Industrial Plants, TV/Radio Broadcasters, Security Agencies, etc.

Mode-S Interrogator for IFF

The project involved designing a Mode-S add on hardware compatible with Interrogate Friend or Foe (IFF) Mk-X system for a ground based radar. The design enables to track 16 different targets with selective interrogation. It is based on Intel processor with FPGA based design.
Fleet Managment System  
As a superset of the Vehicle Tracking System (VTS) built by ASL, a fleet management application is targeted towards large fleet operators who need to monitor, control and plan the despatch of their fleet deployed countrywide. As a consequence, the application will permit optimisation on the performance of their fleet, resulting in trip cycle time improvements, better utilisation of resources, fuel saving and safety of fleet. In actual operation, the movements of vehicles are tracked in real time against the background of a map of the geographical area, and logged in the database for off-line analysis.

As an option, the application can be offered as a subscribed service to the fleet operators who can get data on their vehicles by logging on the service provider's website over the Internet.

Two specific applications have been built at ASL and solutions offered. 		 
Ambulance Monitoring & Maintenance Application (AMMA)  
  AMMA is a software application developed for use by the Ambulances belonging to Hospitals or other Health Care service providers which can be deployed to provide pre-hospital care to accident and emergency victims.

AMMA version 1.0.0 combines geographic map information with the data from GPS based vehicle tracking unit (ASL GeoPoint 2407) installed in the Ambulance, and presents the same on a user Control Station using proprietary Radio and GeoConnect communication software. The application offers several user-friendly features including patient, hospital, caller information, secure vehicle registration, land marks on map, etc.		  
Transport Mangement Application (TMA)  

TMA presents comprehensive planning, simulation and monitoring environment that combines geographic map information with data from GPS based vehicle tracking unit (ASL GeoPoint 2407) installed in the road vehicles to enable their effective monitoring, despatch and optimised utilisation. Interface with Proximity/RF ID sensors is provided to enable monitoring personnel attendance in the vehicle or status of assets. Several user-friendly features are built into the application like route planning, monitor stoppage & over-speeding, driver & personnel IDs, vehicle allocation, etc. to address requirements of Call Centres, Asset Management, Traffic Monitoring, etc.		  
GPS/INS Integration  
This project involved the modeling and simulation of both the Inertial Navigation System (INS) / Inertial Measurement Unit (IMU) and GPS using Matlab and Simulink. Errors were reduced using a 18 stage Kalman Filter. The GPS/INS unit was implemented and Hardware-in-the-loop testing was done.
High Dynamics GPS  
For certain airborne applications, for effective and accurate navigation, it is required to have a GPS position update rate higher than a commonly available 1 sec - data rate of 1 Hz. In this project, the embedded software of a proprietary GPS chipset with its system software was modified to provide position updates every 100 msec - data rate of 10 Hz. Flight simulation using this hardware was also successfully carried out.  
Personal Navigator  
   
A version of this was designed using a PDA on WinCE platform. Another version is designed using simputer on linux platform as a part of AMIDA affiliation program.
For more information, please send email to: contact@asladvancedsys.in
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